“Smoking causes wrinkles that age you prematurely. What are cigarettes costing you?” “150 minutes of exercise a week reduces the risk of cancer.” “2,000 calories a day is all most adults should eat.” We hear so many well-meaning and well-researched messages about how to be healthier, and for many, they prompt real change, like quitting smoking, exercising more and eating better. But for some people, these messages prompt only a defensive and resentful reaction: “Stop