The way to find out about happiness could well be to become a gazillionaire and then watch all your problems vaporize. Yunno, why not? And while that's on the way, there's lots you can do to understand what happiness is for you. The show looks at these, in fact there are two archive shows with Robert Holden (on June 5th and July 24th) exploring the 10+ Keys to Happiness.
In addition, here's Robert talking on GMT about why you can rewire those circuits and actually be happy now.