I recently watched The Pursuit of Happyness (yes spelt like that) with Will Smith and his son starring. Hot on the heels I see this article and map which maps out happy country in the world. Interestingly all the Scandinavian countries rank in the top 20 (including Iceland - I count that as part of Scandinavia but you might not). At the bottom of the list are some African countries.
It looks like money can buy happiness, except maybe in Britain, ranked at 41, or France, ranked at 62. I think that it's the burden of having to be the best lovers in the world that makes the French less happy than the English who are responsible for drinking the most in the world.