After his nationally televised panic attack on Good Morning America, Dan Harris knew he had to make some changes. He realized that the source of his problems was the very thing he always thought was his greatest asset: the incessant, insatiable voice in his head, which had propelled him through the ranks of a hypercompetitive business, but had also led him to make the profoundly stupid decisions that provoked his on-air freak-out. Eventually Harris stumbled upon an effective way to rein in that voice -- meditation, a tool that research suggests can do everything from lower your blood pressure to rewire your brain. Harris takes readers on a ride from the outer reaches of neuroscience to the inner sanctum of network news to the bizarre fringes of America's spiritual scene, and leaves them with a takeaway that could actually change their lives.