American culture's overemphasis on happiness misses an essential part of a full life

Ours are ominous times. We are on the verge of eroding away our ozone layer. Within decades we could face major oceanic flooding. We are close to annihilating hundreds of exquisite animal species. Soon our forests will be as bland as pavement. Moreover, we now find ourselves on the verge of a new cold war.

But there is another threat, perhaps as dangerous: We are eradicating a major cultural force, the muse behind much art and poetry and music. We are annihilating melancholia.

A recent poll conducted by the Pew Research Center shows that almost 85 percent of Americans believe that they are very happy or at least pretty happy. The psychological world is now abuzz with a new field, positive psychology, devoted to finding ways to enhance happiness through pleasure, engagement, and meaning. Psychologists practicing this brand of therapy are leaders in a novel science, the science of happiness.