It’s safest to trust nobody. Do you agree? Before answering, consider this: a recent study at the University of Pittsburgh examined the relationship between attitude and health. People with an optimistic outlook were 14 percent less likely to die for any reason, 23 percent less likely to die from cancer, and 30 percent less likely to die from heart disease over an eight-year period. In order to determine test subjects’ outlook on life, researchers administered a survey consisting of questions like the one at the beginning of this paragraph. If you answered affirmatively, consider spending a few minutes every day thinking about things in a positive light; you’ll be rewarded immediately—and for years to come!