For years we have been told to obsessively monitor when we're angry, what we eat, how much we worry, and how often we go to the gym. So why isn't everyone healthy? Drawing from the most extensive study of long life ever conducted, The Longevity Project busts many long- held myths, revealing how:

• Many of those who worked the hardest actually lived the longest
• Getting married is not a magic ticket to good health
• It's...