Few of us can claim we don't know how to improve our mental and physical health. We are literally inundated with information. The nightly news seems to run a story most weeks about new research showing how important regular exercise is. Doctors commonly tell their patients they need to lose weight and quit smoking or they can develop serious medical problems. Magazine covers highlight energetic and smiling people with captions about the importance of good sleep. Therapists advise people they need to cut down on stress and improve their relationships so they will feel less depressed and anxious. Ministers and …