"In 2009, I delved into the Grant Study data to establish a Decathlon of Flourishing—a set of ten accomplishments that covered many different facets of success. Two of the items in the Decathlon had to do with economic success, four with mental and physical health, and four with social supports and relationships. Then I set out to see how these accomplishments correlated, or didn’t, with three gifts of nature and nurture—physical constitution, social and economic advantage, and a loving childhood.
The results were as clear-cut as they were startling.
We found that measures of family socioeconomic status had no significant correlation at all with later success in any of these areas. Alcoholism and depression in family histories proved irrelevant to flourishing at 80, as did longevity. The sociability and extraversion that were so highly valued in the initial process of selecting the men did not correlate with later flourishing either.
In contrast with the weak and scattershot correlations among the biological and socioeconomic variables, a loving childhood—and other factors like empathic capacity and warm relationships as a young adult—predicted later success in all ten categories of the Decathlon. What’s more, success in relationships was very highly correlated with both economic success and strong mental and physical health, the other two broad areas of the Decathlon..."
Vaillant, George E. "What are the Secrets to a Happy Life?" Mind and Body. Greater Good: The Science of a Meaningful Life, UC Berkeley. (Aug. 6, 2013) Web.