Greg Harden changes lives. This is why hundreds of world-class athletes, doctors, lawyers, teachers, business leaders, college students, and professionals from all walks of life have come to him for advice and direction. Harden teaches his students how to practice, train, and rehearse to give 100 percent, 100 percent of the time, and challenges them by asking: If you don't believe in yourself, why should I believe in you? Now, in his first book, Greg...