The Surprising Benefits of a Bad Mood
It gives you X-ray vision.
A glum outlook is often a more perceptive one, says Rottenberg, citing an experiment in which people were shown a short depressing movie and then, afterward, were asked to debate a point. The sad-people's arguments were more analytical and richer in concrete detail than those of the happier ones, making them more persuasive. The same researchers also found that bad moods can improve recall, reduce errors in judgment, make people slightly better at detecting when they're being lied to and help them get along better with others by making them more polite. "A sad mood, at least of the garden variety, makes people more deliberate, skeptical and careful in how they process information," Rottenberg explains.
It provides some insurance against getting burned twice.
"Even the most backward-looking counterfactual thinking (coulda, shoulda, woulda) has a forward-looking element: understanding why bad things happened helps us prevent their recurrence," Rottenberg writes. Live, cry, learn.
Bad moods make you feel better...eventually.
Research has shown that spending some time in the bad-mood trenches now may help you avoid the sinkhole of major depression in the future. "Being able to accept negative feelings—rather than always striving to make them disappear—seems to be associated with feeling better, not worse, over the long run," says Rottenberg. He adds that science backs up the accepted emotional wisdom that feeling sad about something—say, the one that got away and is never coming back—is the only way to make peace with our feelings about it.