Most self-help books focus on a single topic - a problem, disorder, or life-change goal - and offer readers strategies designed to help them make progress on whatever that topic might be. If you're depressed, get a book on depression. Afraid of heights? There's a book just for you. But the fact is that human problems rarely boil down to a single topic: Few of us are ever just depressed, just anxious, or just inclined to eat too much at dinner. It's far more likely that we want to shake the blues and stop worrying about the bills and learn how to be develop healthy eating habits, and ... the list goes on.