Dr. Sherwin B. Nuland is famous for a book he wrote over a decade ago, called How We Die: Reflections On Life's Final Chapter. His frank take on death became a bestseller and won a National Book Award, and now he's back with a wholly optimistic look at getting old, The Art of Aging: A Doctor's Prescription for Well-Being. So what is his prescription? It's threefold — stay — or get — connected to others, stay fit and active, and exercise your creativity. If you're a boomer, are you taking your medicine? What do you do to stave off feeling old, and what IS old anymore, anyway?