You don't have to be rich to be happy. That much is clear. Sure, having lots of money may give you a sort of satisfaction, but not happiness. It all goes back to asking yourself: what is happiness? Money is nothing but a bartering tool. Having more of it is awesome, sure, and it alleviates a lot of day-to-day issues - as the study, of course, found. But a person should not be measured by how much money that they have. Turns out most people are content with living modestly, as long as they can cover their expenses and love what they do for a living.
But as I see it, there are people in the world who live well below the poverty line and are happy. Why? Because they know what their lives are about. When there isn't much money to go around, people don't really care about money so much, believe it or not. There is such an obsession with money in America and many other places in the world, that the amount of money you make defines you. It doesn't. It's all about how you live, not how much you have. Still, I'm glad this study puts in perspective that you really can't buy happiness.