“You can only learn what you need to know about your job and about yourself by doing it—not by just thinking about it.” That may be a strange way for someone who thinks about (and teaches and writes about) business for a living to start a book. And it certainly represents a fork from the increasingly well-trod intellectual path that celebrates mindfulness and introversion. But to Herminia Ibarra, it represents a truism: “Simply put, change happens from the outside in, not from the inside out.”