For many, that question is a very personal and difficult question to answer. But decades of research and study into what makes people happy has given experts at least some insight into what truly defines happiness for the largest portion of the population.
"Happiness is like a muscle, you have to exercise it," said Zak, whose Ph.D. has led him to study neuroeconomics.
How much does happiness have to do with money? Certainly the "greed is good" mantra has led many to believe that wealth is the quickest avenue to a positive outlook, but is that really the answer?
"When the economic crisis hit, everyone was a lot poorer, people were out of work," said Haidt, a NYU professor. "But the surprising thing was that national happiness level didn't go down very much, because it seemed to happening to everybody. We're all in this together."Catch this new episode of "Larry King Now" on-demand on Ora TV & Hulu.
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