On this edition of The Literary Life, what makes for a happy life, a fulfilling life? Robert Waldinger and Mark Schulz, the directors of the Harvard Study of Adult Development, have just published The Good Life: Life Lessons from the World's Longest Scientific Study on Happiness. Their invaluable insights emerge from the revealing personal stories of hundreds of participants in the Harvard study that forms the basis of this new important book. Learn more about your ad choices. Visit megaphone.fm/adchoices