Dr Robert Waldinger is Professor of Psychiatry at Harvard Medical School, director of the Harvard Study of Adult Development at Massachusetts General Hospital and a Zen master. He also is a practicing psychiatrist and psychoanalyst. His book, The Good Life, co-written with Marc Schulz, was a New York Times and international bestseller and was published in over 40 countries. His TED talk, 'What Makes a Good Life? Lessons from the Longest Study on Happiness,' is one of the ten most viewed talks in the history of TED and has been viewed over seventy-five million times. Marc Schulz is the associate director of the Harvard Study of Adult Development and the Sue Kardas PhD 1971 Chair in Psychology at Bryn Mawr College. He also directs the data science program and previously chaired the psychology department and Clinical Developmental Psychology PhD program at Bryn Mawr. Dr. Schulz received his BA from Amherst College and his PhD in clinical psychology from the University of California at Berkeley. He is a practicing therapist with postdoctoral training in health and clinical psychology at Harvard Medical School.