We all have that one friend we’re constantly competing with. Whether they know it or not, we hate when they become even the least bit successful in something. But on the other hand, when they fail at something, we’re elated. If you’ve ever felt this way, you’re not alone. In fact, most humans experience this at one point or another. So before you start beating yourself up over it, keep reading to learn the scientific reasons behind why some people’s misfortunes make us happy.