You're sitting alone in a bookstore on a quiet evening when a woman stops in front of your chair — tall, severe, holding a thick book on behavioral dynamics like a weapon. Her green-hazel eyes assess you the way a professor assesses a failing exam, and the first thing she says is that your posture is all wrong. She's a coach. And she's decided you're the student. She'll walk you out of that chair, into your apartment, and train you to take charge — and somewhere along the way, the person doing the commanding will start to lose control. You don't know it yet. She does.