You've seen those articles that list the cities of the world by a happiness index, haven't you? Social analysts have long known this - but the happiest places on earth are usually the places with the highest suicide rates. It's just the way it's always been. The study tries to find out why this might be so.
If you lived in a place like Copenhagen or Stockholm, two places in the world that appear to have the most equality, opportunity and chances offered to achieve happiness, how would you explain how people around you dropped like flies? Some scientists try to explain it by pointing to how in spite of all their happiness, they happen to live in a country that's cold and dark for a large part of the year and how that could cause suicidal depression. But the thing is, America has the same kind of problem too. America's happiest cities, in places like Hawaii, which are not noted for long and dark winters, have terrible suicide rates too - the fifth highest in the country.
Here's what researchers think about how humans achieve happiness. To a certain extent, happiness comes from absolute levels of what one has - money, health, a fulfilling family life and opportunity. But far more important than any absolute level happens to be how one compares to the people around one. If you've grown up in a really disadvantaged neighborhood and the people around you are the ones you've always compared yourself with, merely making it to high school, never having been arrested, having a modest but dependable job is and having a tiny but comfortable apartment will make you feel like you're really winning in life. Should you be transplanted to, say, a town in Boston or in the Silicon Valley, where everyone's highly educated and has great aspirations in life, you will suddenly feel that you just can't keep up. And your life is going to seem really pathetic in comparison. People achieve happiness, or fail to, mostly by comparing themselves to the people around them that they relate to.
The happiest states of the country, are places where most people have achieved all that life promises them. People who somehow aren't able to achieve this feel like spectacular losers - even if by the standards of some other places the country, they might really be proud of what they've done with their lives. It's all relative, what makes a person feel happy. When one happens to be one of the only people one knows who haven't done well in life, what is there left to do but to give up?