“It didn’t matter if you were rich or poor, black or white, healthy or ill. Across every cohort, controlling for all variables, if you had “a sense of purpose” you stayed healthy, and if you didn’t have a sense of purpose, you didn’t stay healthy. It was more powerful for your health than exercising every day. It was more important than smoking or drinking. It was pretty much the strongest determinator of your future health.”

― Po Bronson, Decoding the World