Mira Kirshenbaum is clinical director of the Chestnut Hill Institute in Boston and has an international reputation as an award-winning, bestselling authority on relationships. She is the author of nine previous books, including the influential Too Good to Leave, Too Bad to Stay; Parent-Teen Breakthrough; Everything Happens for a Reason; and The Weekend Marriage. She has appeared on 20/20, Today, and CBS Early Show, and has been featured as an expert in O, Cosmopolitan, Vogue, Glamour, and Good Housekeeping. Visit her at mirakirshenbaum.com.