How to rewire your brain — and find your flow | Heather Berlin

Heather Berlin (0:00)

Now, for years, I was terrified of flying. I knew the statistics, I tried to reason my way out of it. No luck.

And finally, I did the opposite. I imagined the worst-case scenario and accepted it. If this plane goes down, that's out of my hands.

Elise Hu (0:23)

You're listening to TED Talks Daily, where we bring you new ideas to spark your curiosity every day. I'm your host, Elise Hugh. When life feels uncertain, a lot of us respond the same way. We hold on a little tighter, we plan, we rehearse, we try to control every outcome.

Neuroscientist Heather Berlin has spent more than two decades studying what happens in the brain when we cling too tightly and when we let go.

Heather Berlin (0:49)

But here's the paradox. The tighter we grip, the more anxious, rigid, and fearful we become.

But when we learn to let go in specific ways, the brain can enter flow. Where discipline meets surrender, and creativity and calm emerge.

Elise Hu (1:09)

In her talk, Heather makes the case that thriving isn't about perfect willpower. It's about knowing when to hold on and when to surrender.

Heather Berlin (1:17)

To truly gain control, you have to learn the fine art of losing it. On purpose, in the right moments.

Now, sometimes you need the break, pause, walk away, choose the long game. But sometimes you need release. Stop perfecting, rehearsing, trying to control everything. Let uncertainty and connection in, and the messy version of you to show up.

Elise Hu (1:43)

She shares four small, surprisingly fun ways to practice letting go, including one she calls the cold tea test, and explains what they do for your brain. That's coming up right after a short break.

And now our TED Talk of the day.

Heather Berlin (2:09)

So when I was five, I had an existential crisis. I did. I realized that I was going to die one day. And that really scared me. And so I told my dad, I wanted to understand the brain so I can keep my thoughts after death. This was my first grasp at immortality. Decades later, my daughter asked me the same thing. Mom, where do our thoughts go when we die? And for both of us, this was more than just a philosophical question. It was a fear of the unknown. Humans are hardwired to crave control because uncertainty feels like a threat. We want to control time, outcomes, even death itself. And when life feels scary, that instinct gets stronger. Losing control can feel terrifying. But here's the paradox. The tighter we grip, the more anxious, rigid and fearful we become. But, when we learn to let go in specific ways, the brain can enter flow, where discipline meets surrender, and creativity and calm emerge. And research shows that flow contributes to happiness and well-being. So, staying true to my five-year-old self, I became a neuroscientist and psychologist, and I've spent my career studying the neural basis of consciousness and what happens in the brain when people lose control, from artists in flow to patients in manic or impulsive states, or when they hold on too tightly, like with anxiety or OCD. For over two decades, my research has explored how the prefrontal cortex, the brain's brake pedal, interacts with deeper emotional and reward circuits of the limbic system, the accelerator. We use impulse control tasks, together with brain scans and physiological measures, to see in real time how well people can hit the brakes and how strongly they're pulled to hit the gas, and what happens when these two systems are out of sync. And what I've learned from my research, clinical work, and life, is that thriving depends on how well we balance those extremes between holding back and letting go. To truly gain control, you have to learn the fine art of losing it on purpose, in the right moments. Now, sometimes you need the break, pause, walk away, choose the long game. But sometimes you need release. Stop perfecting, rehearsing, trying to control everything. Let uncertainty and connection in, and the messy version of you to show up.

Yes, so the goal isn't perfect willpower. It's flexibility, being able to shift gears, restrained when it protects what you care about, but open when life asks you to trust. And the art is knowing which one this moment needs. Now, for years, I was terrified of flying. I knew the statistics, I tried to reason my way out of it. No luck. And finally, I did the opposite. I imagined the worst case scenario and accepted it. If this plane goes down, that's out of my hands. And by letting go of the illusion of control, I calmed my brain's fear circuits. And that was my first taste of what I call controlled surrender. Now, some minds need more control, like people with ADHD or addiction or impulsivity, or children whose brake system, the prefrontal cortex, isn't fully developed yet. And you wouldn't want to follow every impulse, like messaging your ex when you've been out drinking, or letting your 8-year-old hold the car keys and follow their impulses, or doing some meth and punching a cop.