Very good article - hopefully it will put me on path to a fulfilling and happy life. Excellent piece of work. :-)

Re: The correlates of happiness - my only quibble I was previously under the impression that health was a big correlate of happiness, at least at the same level as a successful relationships, etc. In both cases I think a sudden changes lead to corresponding unhappiness or happiness and that over time happiness will return to close to the initial levels. Curiously, in the health footnote you specifically claim look at the unhappiness of people with disabling health conditions, rather than the unhappiness of all unhealthy people, yet you talk about the happiness of all married people. It does not appear that you are comparing like with like. Maybe a point for further research.