Interview with Chris Gardner.
Gardner is a magnificent speaker and has an engaging personality—qualities all business professionals would crave. But what's behind his success? What is the one thing—the one secret—that helped him change his life? "It's passion," he told me. "Passion is everything. In fact, you've got to be borderline fanatical about what you do."

Donald Trump once said: "Without passion, you have no energy—and without energy, you have nothing."