Andrew Donelan did everything right. He attended the right schools, married the right woman, had a satisfying career and a happy family. So nothing could have prepared him when he woke up one June morning to a hollowed-out world. Instead of his comfortable Manhattan existence he found a world stripped of meaning, color, and interest. In the mirror he saw not a man with hopes and dreams, but a thing among things. Looking inward, he saw nothing at all--no...