Chris Crowley is a former litigator (Davis Polk & Wardwell), the coauthor, with Henry S. Lodge, of the Younger Next Year books, and the coauthor, with Jen Sacheck, PhD, of Thinner This Year. Though in his eighties, he fully lives the life, skiing black diamonds and routinely doing fifty-mile bike rides. He and his wife live in Connecticut and New York City. Henry S. Lodge, MD, FACP, headed a 20-doctor practice in Manhattan and was the Robert Burch Family Professor of Medicine at Columbia University Medical Center. Allan J. Hamilton, M.D., a Harvard-trained brain sur­geon, is the Regents' Professor of Neurosurgery at the University of Arizona Health Sciences Center. He is also the author of The Scalpel and the Soul, Zen Mind, Zen Horse, and Lead with Your Heart. He lives near Tucson, Arizona.