The #1 New York Times bestseller that has all America talking: as seen/heard on CNN's Fareed Zakaria GPS, Morning Joe, CBS This Morning, The Bill Simmons Podcast, Rich Roll, and more.“Fascinating. . . . If you’re a generalist who has ever felt overshadowed by your specialist colleagues, this book is for you.” —Bill Gates “The most important business—and parenting—book of the year.” —Forbes “Urgent and important. . . an essential read for bosses, parents, coaches, and anyone w