ChangeableBy: J. Stuart Ablon An empowering read. Susan David, Ph. D., author of Emotional Agility A great book. Bruce D. Perry, M. D., Ph. D., co author of What Happened to You? As featured on The Mel Robbins Showdiscover the surprising science of helping anyone change Whether as a parent, a boss, a romantic partner, or on your own journey toward personal growth, you know how hard it is to change problem behavior. Conventional methods like willpower,