How do we live a meaningful life? How do we confront life’s unavoidable end? The famous existential psychiatristIrvin Yalom, the "grand old man of psychiatry," has gone head-to-head with his patients over these issues, exploring their vulnerabilities and fears, and coming to terms with his own. The best-selling author's new book is “Creatures of a Day: And Other Tales of Psychotherapy.” Originally aired 04-01-15.