Money, among many other things, makes you happier. But one relationship that is even stronger than the one linking money to happiness is the one linking age to happiness. And it is not linear, nor log-linear. It's U-shaped, bending at 46 years old. This relationship exists in all countries around the world, from Zimbabwe to Japan, and was true 40 years ago as well as today. So you get more and more depressed until your middle-age crisis when suddendly life starts getting better. How can this be? The Economist suggests this might be because older people have fewer rows and come up with better solutions to conflict. They are better at controlling their emotions, better at accepting misfortune and less prone to anger. One thing to look forward to! But gotta get to 46 first!