The Science of a Success Mindset with Neuroscientist Andrew Huberman

High-Level Overview

This is the second half of Lewis Howes's interview with Stanford neuroscientist Andrew Huberman, and it centers on one idea: the adult brain can still change, but it changes in two steps. The first is effortful, focused, often frustrating work, which marks the circuits to be changed. The second is deep rest, when the changes are actually made. From there Huberman builds out a picture of two reward chemicals, dopamine for pursuit and serotonin for the feeling of having enough, and argues that hard-driving people get into trouble when they neglect the second. He shares the daily practices he uses himself, mainly yoga nidra and gratitude, and gives his view on where supplements, prescription drugs and brain implants fit.

The tone is curious and friendly, with Howes using his own struggles learning Spanish and his memories of basketball camp and salsa dancing as test cases. It is technical in places but always pulled back to practical use. The conversation moves from the mechanics of learning to rest and recovery, then out to the frontier of accelerated learning, and finally to Huberman's own fears and what he does for fun.

The Discussion Explores:

• Why the strain and frustration of learning are the trigger for brain change, not a sign of failure
• The two phases of neuroplasticity: focused effort, then deep rest and sleep
• Play as a way to learn, and why adults lose it
• Dopamine versus serotonin, and what Huberman thinks go-getters get wrong
• Yoga nidra and gratitude as daily reset practices
• His ordering of tools: behaviors, nutrition, supplements, prescription drugs, and brain machine interfaces
• Experimental work on accelerated learning through brain stimulation
• Goals, hormones and what he calls the will to live, plus his own fears and three truths

Deep Dive into Main Ideas

Frustration is the trigger

Huberman opens with the line Howes asks him to repeat: "The mental strain you feel when you're learning something is the trigger for neural plasticity for your brain to change." The purpose of neuroplasticity, he explains, is to take things that require deliberate effort and make them reflexive. Howes, 37, has just started one-on-one Spanish lessons and admits that every class leaves him thinking it is too hard and too late. Huberman says that feeling has a chemical basis. Adrenaline is released, which is why it does not feel good, and focus recruits acetylcholine, which he calls the molecule of focus. Acetylcholine highlights the brain areas that are active during the effort and marks them for change.

In adults, he says, plasticity is triggered by focus, attention and even agitation: "the more frustrated you feel, the more you're actually triggering learning". The brain would otherwise keep doing what it already does; strain is the cue that something needs to change. Later in the conversation Howes sums up what he is taking from this, that confusion is the trigger, and Huberman agrees, comparing it to raising a flag over a mental track that the brain will return to later.

The change itself happens in rest

The second phase is deep relaxation and deep sleep, such as slow wave sleep. That, Huberman says, is when the connections between neurons get stronger, when unwanted connections are removed, and in certain cases when new neurons are born. Howes recognizes the pattern from basketball camps as a kid: he would struggle with new footwork all day, fail at it, and then find the next day that it simply showed up.

Huberman compares it to resistance training. The pump in the gym is a preview, but the actual growth of the muscle fibers comes later, during sleep. Learning works the same way, which is why he treats rest as part of the work and not a break from it.

Play, Richard Feynman and the ice bath

Asked how important it is to keep challenging the mind with age, Huberman says he believes it is very important for a full life, and names the physicist Richard Feynman as a hero for his playful approach: bongo drums, sketching and painting late in life, float tanks. Play matters, Huberman says, because it combines focus and alertness with enough lightness to release dopamine. Young animals and children learn social limits through play; a puppy that bites too hard gets a yelp, and learns a soft bite. Adults tend to be more demanding of themselves and play less.

Howes tells a story about taking a group of 13 men into an ice bath for 10 minutes on a trip to Poland with Wim Hof. The first two minutes were miserable, then the group started chanting and singing and it became more enjoyable. Huberman says team and community are powerful buffers against stress, and that while you cannot make the cold not cold, you can make it not painful, which is where dopamine comes in.

He also explains the age difference. A young brain is highly plastic and quickly turns whatever it is taught into reflex, including morals and beliefs. After about age 25 the brain stays plastic for life, but change takes more focus and has to be self-directed; in his words, the only person who can change an adult's brain for the better is that person.

Dopamine, serotonin and what go-getters get wrong

Huberman describes serotonin as a reward molecule like dopamine, but released when we feel we have enough: a great meal with friends or family, holding a child, a partner or a dog. Dopamine points us at things outside ourselves, the pursuit and motivation molecule. Unless the serotonin box is checked periodically, he says, we cannot keep leaning into pursuit for long.

This is where he thinks driven people go wrong. He has seen friends in Silicon Valley reach the finish line with few people to share it with and end up isolated and depressed. He points to the rest day found across religions as a form of needed renewal, and Howes adds the sports calendar: nobody can be in season for ten years straight. Huberman admits he has daily and weekly recovery habits but, in 25 years of science, has never taken a proper vacation. He also describes dopamine reward prediction error: the more we expect an achievement to feel great, the more dopamine it takes for it to feel good when we arrive.

Yoga nidra and gratitude

The practice that has served Huberman best is yoga nidra, which he says literally means yoga sleep. You lie down and follow a script, with some breathing and a body scan, into deep relaxation. He does it once or twice a day, first thing if he has slept badly or in the afternoon if he is tired, usually with a 20-minute script, and says there are 10-minute versions and many free ones on YouTube. He stresses that he has no affiliation with any yoga nidra business. It also trains the ability to turn thoughts off, which helps with falling asleep. He cites brain imaging studies, not from his own lab, showing that a session of yoga nidra (30 minutes, he believes) resets dopamine levels in the basal ganglia, and he mentions colleague David Spiegel's work on clinical hypnosis in connection with the intentions set during deep relaxation.

His second practice is gratitude, which he insists is not complacency. He says it has been shown to raise serotonin, and Howes recalls a Yale happiness researcher telling him gratitude is among the top proven contributors. Huberman's summary: "I think gratitude is wonderful. It resets the system so that you can be in pursuit." He says high performers in special operations communities he has worked with keep gratitude practices too. His own starts on waking, when he reorients to being grateful simply to be awake, and extends to relationships, mentors and his 10-year-old bulldog. It can take one second or ten minutes. As for apps or products, "Mother Nature has the patent for this".

Behaviors first, then nutrition, supplements and drugs

Huberman lays out an order. Start with behaviors, which are free and self-directed. Then nutrition. Then supplements, which he thinks have a real place; he says every scientist he knows who is serious about mind and body takes them, while noting that there is plenty of snake oil and that he has no supplement company. Then prescription drugs. He says drugs like Prozac get a bad reputation but have saved millions of lives, that clinically depressed or suicidal people need help from a board certified MD, and that the drugs do not replace changing behavior. He quotes a physician friend: "better living through chemistry still requires better living". A fifth category, brain machine interfaces, is in his view still in its infancy commercially.

The frontier of accelerated learning

Howes asks whether constantly challenging the mind would lengthen or shorten life. Huberman is confident it will not shorten it, and uses the question to describe experiments by Mike Merzenich at UCSF: stimulating the brain areas that release dopamine and acetylcholine while playing certain tones caused the auditory cortex to rewire massively around those sounds. These chemicals, he says, are gates to plasticity.

He then tells a visibly astonished Howes that programs are under way to accelerate language learning with implanted electrodes, in neurosurgery patients already having surgery for other reasons, and that he has close friends who run such laboratories. He says the results have not been revealed, describes the work as tied to government and military type contracts, and cautions that nobody should rush to put a chip in their head. He is not a fan of the terms smart drugs or nootropics, which he finds too vague, but gives examples: a Nobel Prize winning neuroscientist in his 70s who chews large amounts of Nicorette for focus (Huberman says he is not recommending it), and alpha GPC, which he says stimulates acetylcholine release and in theory helps a bout of learning. A stronger trigger demands more rest: "Maximum stimulus, maximum recovery." He also passes along what he calls lore about sprinters using drugs to react faster to the starting gun, and notes how much attention athletes now give to sleep. For the typical person, he repeats, behaviors are the way to go.

Goals and the will to live

Huberman says he does not know whether lifelong learning extends lifespan, but he ties pursuit to biology. He describes the dopamine pathway as closely linked to the reproductive hormones, testosterone in men and estrogen in women, and says testosterone's main effect is to make stress and effort feel good. The true opposite of testosterone, he says, is prolactin, released after a big win or orgasm to shift us toward rest. He calls this whole system the will to live. With too much serotonin and too little dopamine, people become passive; without a goal, "We are essentially on idle."

Children, flooded with dopamine, explore by default. With age, the space between neurons fills with extracellular matrix, which he likens to concrete, but he says studies show it can be reduced and that a strong pursuit goal is the way to do it. Howes connects this to Spanish: his father is from Argentina, he wants to reach Spanish speakers, and he has hired a one-on-one teacher and decided to reward the daily process instead of waiting for fluency. Huberman approves, saying a larger mission offsets discomfort with a reward that is internal and always available.

Fears, fun and three truths

Huberman says his undergraduate, graduate and postdoctoral advisors all died young, one by suicide and two of cancer. His main fear is dying before he gets out the information he believes belongs in the world: "when people die, there's no download from their brain. There's no fossil record of their thoughts." His other fear is that quality will drop as he takes on more. For fun he lists science itself, music, movies, food, training, friendship, art and his dog, and mentions that he has experienced depression in the past.

His three truths are to know thyself; to notice the sequence of wish, anxiety and defense, and intervene before the reflexive defense; and to have fun, which he credits to a remark from Laird Hamilton. Greatness, he says, is anyone making the effort to use the gift of neuroplasticity to be better and show up better for other people.

Conclusion

Huberman's case is that learning as an adult is supposed to feel hard, and that the discomfort is the signal the brain needs. What most people miss is the other half: deep rest, sleep, gratitude and enjoyment are what turn that signal into lasting change and refill the drive to go again. His own routine is modest and free, a daily yoga nidra session and a moment of gratitude on waking, and he places behaviors ahead of nutrition, supplements and drugs. The more dramatic material about implants and stimulants is offered as a look at where the science is heading, with his own cautions attached. Keep a goal in front of you, reward the effort and not just the result, and leave room for play.

This is a summary of "The Science of a Success Mindset with Neuroscientist Andrew Huberman" from The School of Greatness, giving you the GIST so you can decide if you want the REST. Listen to the full episode.