We assume that happy and unhappy people are born that way. But both kinds of people do things that create and reinforce their moods. Happy people let themselves be happy. Unhappy people continue doing things that upset them.
happy people do not experience one success after another and unhappy people, one f ailure after another. Instead, surveys show that happy and unhappy people tend to have had very similiar experiences. The difference is that the average unhappy person spends more than twice as much time thinking about unpleasant events in their lives, while happy people tend to seek and rely upon information that brightens their personal outlook.