One gets sick at times of those scientific studies that prove (or purport to disprove) the obvious, but here is one of the genre to cheer you up. Really.
Happiness, it seems, is not genetically programmed, but is "responsive to life priorities and choices".
And people who practice religion, and who prioritise altruistic and family goals over career and material success tend to be more satisfied with life.
But it is enough of a story it seems, to make the ABC's The World Today, and online news.