What does it mean to be happy? Americans have had an obsession with "the pursuit of happiness" ever since the Founding Fathers enshrined it along with life and liberty as our national birthright. Whether it means the accumulation of wealth or a more vaguely understood notion of self-fulfillment or self-actualization, happiness has been an inevitable, though elusive, goal.But it is hard to separate "real" happiness from the banal self-help version...