“This book gets to the heart of what truly drives successful leadership: meaning, relationships, and a mindset focused on mastery. Sébastien Page gives us the science and practical tools to win the mental game and lead with purpose.” —Daniel H. Pink, #1 New York Times bestselling author of The Power of Regret and Drive

“Grounded in science but written in a breezy, no-nonsense style that will be appreciated by busy leaders, this book provides clarity and nuance to how to apply positive, sports, and personality psychology to leadership and decision-making.” —Annie Duke, bestselling author of Quit and Thinking in Bets

“Sébastien Page takes us on a fascinating tour of the best practices in psychology that empower outstanding leaders. With a blend of scientific evidence and memorable examples, he lays out principles that don't just enhance performance but enrich every aspect of life.” —Robert J Waldinger, MD., Professor of Psychiatry, Harvard Medical School, and Author, The Good Life: Lessons from the World's Longest Scientific Study of Happiness

“You cannot manage others if you cannot manage yourself. In this brilliant book, Sébastien Page will show you how to optimize your own psychology—-and your ego-—so that you can understand and motivate others.” —Kim Scott, author of Radical Candor and Radical Respect

“Leadership isn’t about being the smartest or highest-ranking person in the room. More than anything else, it is about honing the best mental skills possible. This fantastic book will give you the tools to guide yourself, and others, to peak performance.” —Dr. Marshall Goldsmith is the Thinkers50 #1 Executive Coach and New York Times bestselling author of The Earned Life, Triggers, and What Got You Here Won’t Get You There