I AM.
I have a symbol tattooed on my wrist that spells I AM. For me it carries more than one meaning, some of them mystical. The one I want to talk about today is the one this Experiment is about.
Those two words are also the start of one of the most famous ideas in self help. Say "I am," and whatever follows starts to become true. Think it, feel it, and it shows up. In 2024 the Cambridge Dictionary picked "manifest" as its word of the year, because so many people were looking up its new meaning: picturing what you want, saying it out loud, and believing that makes it more likely to happen.
Scroll any social feed and you will find manifestation quotes everywhere. Most of them say the same thing in different words. The universe answers your frequency. What you focus on grows. Feel it as if it were already yours.
For a long time that was the mystics' territory. It is not anymore. Neuroscientists, doctors and psychologists now study what a thought does inside your head and your body, and they keep finding that the old teachers were describing something real, in the language they had.
This piece walks through the best known of those teachers, one by one, and puts each one next to what the science found. By the end you will know how your brain answers your thoughts, why the teachers kept saying the same thing for more than two thousand years, and one practice the research backs.
The oldest idea.
The idea is older than any book on your shelf.
The Dhammapada, a collection of the Buddha's sayings, opens with this line: "All experience is preceded by mind, led by mind, made by mind." In 1908 a small book called The Kybalion put it as a law: "The All is Mind; the Universe is Mental." It claims to pass on the teachings of Hermes Trismegistus, the legendary figure the alchemists called their founder.
Almost every religion carries a version of it. In Christianity, the Bible opens with God speaking the world into being, and Jesus tells his followers: "Ask, and it shall be given you; seek, and ye shall find." In Islam, God says in a well known hadith: "I am as My servant thinks of Me," which Muslims read as a call to expect good. And Judaism is full of it. In Exodus, when Moses asks God for his name at the burning bush, the answer is "Ehyeh asher ehyeh": I AM THAT I AM. The Talmud teaches that the way a person wants to go is the way they are led. One of the earliest books of Jewish mysticism, the Sefer Yetzirah, describes the world being built out of the letters of the Hebrew alphabet. And a Hasidic saying puts it in one line: "Tracht gut, vet zein gut." Think good, and it will be good. Traditionally, Jewish children start studying Scripture at five and the Talmud at fifteen.
Then the self-help writers turned it into a method. In 1903 James Allen wrote As a Man Thinketh: "A man's mind may be likened to a garden, which may be intelligently cultivated or allowed to run wild." In 1937 Napoleon Hill, who spent twenty years studying the most successful people of his time, published Think and Grow Rich, one of the best selling self help books ever written, and opened it with four words: "Truly, thoughts are things." His method was concrete. Decide exactly what you want, write it down with a date, make a plan, and surround yourself with people who push you toward it. He called that group a master mind. In the 1940s Neville Goddard, a lecturer in New York, taught people to "assume the feeling of the wish fulfilled." His 1952 book The Power of Awareness opens with a chapter called "I AM."
Start with Hill, because his method is the easiest to test. The psychologists Edwin Locke and Gary Latham spent decades studying goals, and specific, hard goals beat "do your best" goals, again and again. What psychologists call "if-then plans," deciding in advance exactly what you will do and when, made people more likely to reach their goals across 94 studies with more than 8,000 people. For example: if it is 7 in the morning, then I put on my running shoes. And in a study at Dominican University in California, the people who wrote their goals down and sent a weekly progress report to a friend got the furthest. Hill's master mind has a modern name: accountability.
Now back to the Buddha's line: made by mind. Neuroscience now describes the brain as a prediction machine. It does not simply record the world. It guesses what is out there from what it expects, and uses your senses to check the guess. Lisa Feldman Barrett, a neuroscientist at Northeastern University, puts it plainly: "the brain actually operates by prediction all the time." What you see, and even what you feel in your body, is built in part from what you expect. In a 2023 study at University College London, people who imagined something vividly were more likely to believe they had actually seen it. The lead researcher, Nadine Dijkstra, said the gap between imagining and seeing "is a difference in degree, not in kind."
Made by mind turns out to be close to how the brain actually works.
The Secret.
Most people met this idea through The Secret.
It had a forerunner. In 2004 a small film called What the Bleep Do We Know!? mixed interviews with scientists and spiritual teachers and argued that your thoughts shape your reality. It became a cult hit. Two years later, Rhonda Byrne, an Australian television producer, released The Secret, first as a film in March 2006 and then as a book that November. In February 2007 Oprah Winfrey gave it a full episode. The Secret and its sequels have more than 30 million copies in print.
The Secret calls it the law of attraction, and the method has three steps: ask, believe, receive. Know exactly what you want. Believe it is already on its way. Feel the gratitude of having it. One teacher in the film, Jack Canfield, the co-author of Chicken Soup for the Soul, tells how he drew a 100,000 dollar bill and taped it to his ceiling. The film's shortest line is the one people remember: "Energy flows where attention goes."
Science agrees with that line, in its own words. Your brain cannot take in everything, so it filters, and it lets through what you have told it matters. In a famous Harvard experiment, about half the people counting basketball passes in a video never noticed a person in a gorilla suit walking through the middle of the game.
Richard Wiseman, a psychologist in England, turned this into a test about luck. He gave people who called themselves lucky or unlucky a newspaper and asked them to count the photographs. On page two, in large letters, an ad said: "Stop counting. There are 43 photographs in this newspaper." The people who called themselves lucky were more likely to see it. The unlucky ones kept counting. Luck, in Wiseman's work, is partly a way of paying attention.
Gratitude has its own evidence. In a study by the psychologists Robert Emmons and Michael McCullough, people who wrote down a few things they were grateful for each week, for nine weeks, rated their lives higher and exercised about an hour and a half more per week than people who wrote about their hassles.
The teachers in the film knew belief was only half of it. On Larry King in 2007, John Assaraf, one of them, said: "You've got to actually take action." Lisa Nichols, another: "You can't just believe it, you can't just sit back and think it's going to happen."
Joe Dispenza.
If one teacher bridged the mystics and the lab, it is Joe Dispenza. He appeared in What the Bleep, trained as a chiropractor, and went on to write Breaking the Habit of Being Yourself, You Are the Placebo and Becoming Supernatural. In the film he says: "I wake up in the morning and I consciously create my day the way I want it to happen."
His core idea is that the brain can be rewired by repeated thought, and that you can rehearse the person you want to become until your brain treats that person as real. He often uses a phrase from neuroscience: neurons that fire together, wire together. It comes from the work of the Canadian psychologist Donald Hebb in 1949, and it holds up. Connections you use get stronger. Scientists call this neuroplasticity, and it gets its own Experiment.
Mental rehearsal has some of the best evidence in the field. In a 1995 study led by the neurologist Alvaro Pascual-Leone, one group of volunteers practiced a five finger piano exercise for two hours a day, and another group only imagined playing it. After five days, the part of the brain that controls the fingers had changed in both groups, in a similar way. Playing still made people better than imagining. But imagining alone changed how the brain responded.
Then the placebo, which Dispenza turned into a book title. In 2010 at Harvard, Ted Kaptchuk gave people with irritable bowel syndrome pills in a bottle labeled "placebo" and told them the pills had no active ingredient. After three weeks, 59 percent reported real relief, against 35 percent of people who got no pills. They knew it was a sugar pill, and it still worked. In a 2001 study published in Science, people with Parkinson's disease were given a saline injection they believed was medicine, and their brains released dopamine, the chemical their disease runs short of.
It works the other way too. In the SAMSON trial in London, published in 2020, sixty people who had stopped taking statins, the common cholesterol pills, because of side effects, took statins, sugar pills and nothing, a month at a time. The sugar pill months produced 90 percent of the symptoms the statins did. Doctors call this the nocebo effect. Expect harm, and your body can produce it.
Dispenza also teaches heart coherence: slow breathing while holding a feeling like gratitude. Breathing at about six breaths a minute brings your heart rate, blood pressure and breath into rhythm and raises heart rate variability, a marker of a calm, flexible nervous system. A review of 223 studies found the effect reliably. In 2025 a team at the University of California, San Diego, working with Dispenza, measured twenty people before and after one of his week-long meditation retreats and found changes in their brain activity and their blood within seven days.
He goes further, into what he calls the quantum field, a field of possibility that answers your thoughts and feelings. That part is his own language, and I leave it in his words. What the lab can measure is the part inside you, and that part is real.
Huberman and the Stanford labs.
Andrew Huberman, the Stanford neuroscientist behind Huberman Lab, has given this subject several episodes. His own position fits in six words: "I'm a believer in belief effects."
His guest Alia Crum runs the Mind and Body Lab at Stanford. Her best known study used a milkshake. People drank the same 380 calorie shake on two different days. Once the label said it was an indulgent 620 calorie treat. Once it said it was a sensible 140 calorie diet shake. When they believed it was the rich one, their ghrelin, the hunger hormone, dropped much more steeply. Same shake, different belief, different body. Crum told Huberman: "we have more evidence on placebo effects than we have for any other drug."
Her stress work is just as practical. Employees at a large bank watched short videos, about nine minutes in total over a week, that framed stress either as harmful or as something that sharpens you. The group told stress could sharpen them reported fewer stress symptoms afterward.
James Doty, a neurosurgeon at Stanford, wrote a whole book about this in 2024, Mind Magic. As a poor twelve year old in California, he walked into a magic shop where a woman named Ruth taught him to relax his body, quiet the voice in his head and picture what he wanted. He explained it with three brain networks: one that plans and drives, one that chatters and criticizes, and one he calls "a bloodhound," the salience network, which picks out what matters to you from everything around you. Set the intention, and the bloodhound goes looking.
Then hypnosis, which sounds like the most mystical tool of all. Huberman's guest David Spiegel, a Stanford psychiatrist who has studied it for decades, describes it as "a state of highly focused attention." About two thirds of adults can be hypnotized. Huberman says he uses self hypnosis to fall back asleep at night. Focused attention is one way a thought reaches the body.
The long game.
The biggest numbers in this field come from studies that followed people for years.
Across 15 studies and more than 229,000 people, optimists had about 35 percent fewer heart attacks, strokes and other heart events than pessimists. In the Harvard Nurses' Health Study, which followed about 70,000 women, the most optimistic had a lower risk of dying from major diseases over eight years. And Becca Levy, now at Yale, found that people with positive beliefs about getting older lived about seven and a half years longer than people with negative ones. More on that in the longevity Experiment.
These studies show a link, not proof that the belief caused the longer life. Optimists may also sleep better, move more and see a doctor sooner. But that is the point the teachers kept making. A belief does not stay in your head. It shows up in what you do every day.
Carl Jung.
Carl Jung, the Swiss psychiatrist, gave manifestation two of its favorite ideas.
The first comes from his book Aion, in 1951: "The psychological rule says that when an inner situation is not made conscious, it happens outside, as fate." What you do not see in yourself, you meet in your life.
Science has a mechanism for the first step of that. At UCLA, Matthew Lieberman found that simply putting a feeling into words, naming it as anger or fear, calms the amygdala, the brain's alarm. Make the inner situation conscious, and it loses some of its hold.
The second idea is synchronicity: a meaningful coincidence. You think of an old friend, and that afternoon they call. Jung's own example happened in his office. A patient was telling him about a dream of a golden scarab when an insect tapped at the window. Jung opened it, caught a beetle that looked like a scarab, and handed it to her.
Psychology sees the same moment from the inside. Your brain is built to find meaning, and the meaning you find shapes what you do next. A sign is a sign because you were ready to notice it.
The power of the will.
Here is where the teachers and the science meet, with one warning.
Goddard taught people to feel the wish already fulfilled. The Secret says to feel it as if it were already yours. Done right, that feeling is fuel. Done wrong, it replaces the work.
Lewis Howes, host of the famous podcast The School of Greatness, says it bluntly: "Manifestation is not about wishing for something." For him, what holds most people back is worthiness: "You will never outgrow the level of worthiness you believe you deserve."
Gabriele Oettingen, a psychologist at New York University, has spent more than twenty years on this. In one set of experiments, people who pictured an ideal outcome, everything going well, ended up with lower blood pressure, a sign that their body had relaxed as if the goal were already reached. In a study that followed people for a week, the ones asked to imagine an ideal week got less done than people who imagined an ordinary one. The dream felt like the reward, so the body stopped pushing. Huberman, on his goals episode, goes even further: "it's not about visualizing success, it's about visualizing failure."
Harry Potter has a scene about exactly this. In the first book, Harry finds the Mirror of Erised, which shows the deepest desire of whoever looks into it. Harry sees the family he lost, and he goes back night after night to sit in front of it. Dumbledore moves the mirror and tells him: "It does not do to dwell on dreams and forget to live, remember that."
A century ago Florence Scovel Shinn made the same point. In The Game of Life and How to Play It, she retells the Bible story of three kings in a desert who were told to dig ditches for water with no rain in sight. Her lesson: "Man must prepare for the thing he has asked for, when there isn't the slightest sign of it in sight."
Jim Carrey tells the version with a happy ending. As he told Oprah in 1997, years before he was famous he wrote himself a check for 10 million dollars "for acting services rendered," dated it Thanksgiving 1995 and kept it in his wallet. Just before that Thanksgiving, he learned he would be paid 10 million dollars for Dumb and Dumber. He tells the second half too: you cannot just visualize and then go eat a sandwich.
I know this one from my own life. Ask my friends and they will tell you one thing about me: when I say I will do something, I get it done. Not only in business. A project, a trip, spending months in the Caribbean in winter. Once I decide I want to do something, I do it. I convince myself enough, and I end up doing it.
I do not picture it and wait. I decide, and then I do the work. A belief is not the wish. It is the decision that sends you to work.
I AM, in practice.
Here is the formula I built for myself, and what the science says about each step.
Recognize the old belief that holds you back. Naming it is the first step, close to what Lieberman measured: a feeling with a name loses some of its grip.
Reframe it. Talk to yourself the way a coach would. Ethan Kross at the University of Michigan found that people who coached themselves by their own name, or as "you," before a stressful speech felt less anxious and performed better.
Take the actions. This is Hill's plan, and the "if-then plan" from earlier. Write down the moment and the action together. For example: if I pour my first coffee, then I send the email I have been avoiding.
Feel it before you have it. This step stays, with Oettingen's twist: feel the person doing the work, not only the finish line.
Repeat every day. Habits form through repetition. In a study at University College London, a new daily habit took a median of 66 days to become automatic.
End the day in the theta state, the quiet stretch between awake and asleep, or with self hypnosis. This one is my own practice. Sleep tends to hold on to what you went over just before it, and Spiegel's work shows how open the mind is when attention narrows. Brain states, from beta to alpha to theta, get their own Lab Note.
Here is what you can do tonight, in five minutes. Oettingen calls it WOOP, for Wish, Outcome, Obstacle, Plan. First the wish: write it in one line. Then the outcome: picture the best result for a minute, and feel it. Then the obstacle: name the thing inside you most likely to stop you. Then the plan: if that obstacle shows up, then I will do this. A review of 21 studies with nearly 16,000 people found that this practice helps people reach their goals.
The problem is, we forget. Life happens, we get busy and distracted, and things stop going the way we want. The trick is to remember. That is one of the reasons I put I AM on my wrist. The teachers were right that those two words matter. The science adds the part that comes after them. I am is the decision. The rest is the work.
Experiment 009 is complete. You just read it.
Georges
Usually one Experiment on Sunday. Lab Notes in between. Free.
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