Karl Menninger, a famous psychiatrist, once gave a lecture on mental health and was answering questions from the audience. “What would you advise a person to do,” asked one, “if that person felt a nervous breakdown coming on?”

Most people expected Menninger to reply: “Consult a psychiatrist.” To their astonishment, he replied, “Lock up your house, go across the railway tracks, find someone in need, and then do something to help that person.”