NATIONAL BESTSELLER • An award-winning psychologist reveals the hidden power of our inner voice and shows how to harness it to combat anxiety, improve physical and mental health, and deepen our relationships with others.

“A masterpiece.”—Angela Duckworth, bestselling author of Grit • Malcolm Gladwell, Susan Cain, Adam Grant, and Daniel H. Pink’s Next Big Idea Club Winter 2021 Winning Selection

One of the best new books of the year—The Washington Post, BBC, USA Today, CNN Underscored, Shape, Behavioral Scientist, PopSugar • Kirkus Reviews, Publishers Weekly, and Shelf Awareness starred reviews

Tell a stranger that you talk to yourself, and you’re likely to get written off as eccentric. But the truth is that we all have a voice in our head. When we talk to ourselves, we often hope to tap into our inner coach but find our inner critic instead. When we’re facing a tough task, our inner coach can buoy us up: Focus—you can do this. But, just as often, our inner critic sinks us entirely: I’m going to fail. They’ll all laugh at me. What’s the use?