One of America's most signature contradictions is that while "the pursuit of happiness" is enshrined in the Declaration of Independence, few Americans actually are happy. According to a Harris poll, only one in three Americans consider themselves "very happy."
Maybe that's why there's such a market for happiness: Amazon holds some 66,000 books on the sought-after subject.
You don't have time to read all those. So we've summarized the best ones.
Mike Nudelman/BI