Pema Chodron's early life was quite ordinary—she was born Deirdre Blomfield-Brown in New York City, became a grammar school teacher, had two children and went through two divorces. Then, Pema's life took an extraordinary turn in her mid-30s when she decided to become a Buddhist nun. Oprah talks with Pema, author of When Things Fall Apart: Heart Advice for Difficult Times, about her inspiring life story and her work to bring the teachings of Tibetan Buddhism to Western audiences.