
In an unprecedented series of studies, Harvard Medical School has followed 824 subjects -- men and women, some rich, some poor -- from their teens to old age. Harvard's George Vaillant now uses these studies -- the most complete ever done anywhere in the world -- and the subjects' individual histories to illustrate the factors involved in reaching a happy, healthy old age. He explains precisely why some people turn out to be more resilient than others, the complicated effects of marriage and divorce, negative personality changes, and how to live a more fulfilling, satisfying and rewarding life in the later years. He shows why a person's background has less to do with their eventual happiness than the specific lifestyle choices they make. And he offers step-by-step advice about how each of us can change our lifestyles and age successfully. Sure to be debated on talk shows and in living rooms, Vaillant's definitive and inspiring book is the new classic account of how we live and how we can live better. It will receive massive media attention, and with good reason: we have never seen anything like it, and what it has to tell us will make all the difference in the world.
https://www.amazon.com/Aging-Well-Surprising-Guideposts-Deve...
None of these guys led perfect lives. Alcoholism, abuse, death, divorce. But as they grew older the things they most often cited in hours of interviews as objectively making them happier, were the relationships they forged and kept along the way.
One thing to remember is that happiness is relative and changes over your lifetime. What makes you happy does not make others happy, and what makes you happy at 20 may not make you happy at 30 or 40. It's easy for HNers to read an article like this and strive to achieve happiness in the boxes defined in this article, but living authentically in what gives you happiness is just as (if not more) important than the tenants that are outlined in this article.
[1] https://en.wikipedia.org/wiki/Grant_Study
[2] http://www.hup.harvard.edu/catalog.php?isbn=9780674004146
[3] http://www.amazon.com/Aging-Well-Surprising-Guideposts-Devel...
