While wealth has a modest impact on well-being, other social factors appear to have greater influence.
"It's a lot of fun to see what the correlations are for happiness," said Glenn Van Ekeren, an elder care executive in Omaha, Neb., who has published three books on the secrets to happiness. "There are some real affirmations of life in this poll."
One of the most important things Americans can do to improve the odds of being happy, the survey found, is to get married. Sixty percent of married people are very happy, compared to 41 percent of singles.