Or learn to hula. Or join a quilting bee. Just find something that occupies 100 percent of your attention while you’re engaged in it. You’ll be more motivated and focused—feelings that promote happiness, says Mihaly Csikszentmihalyi, a professor of psychology and management at Claremont Graduate University, in Claremont, California. Case in point: Buettner says that in Denmark (characterized as the most thriving country in the world when it comes to well-being, according to a recently published World Gallup Poll), a majority of the population reports belonging to a social club.