One benefit of anger is motivation.

When we feel that emotion that riles us up, we also feel motivated. At first, knowing how best to act is difficult, but in time the emotion of anger can drive us to create something innovated to solve a problem. While we can all relate to anger as a result of injustice or pain (like when a lover cheats or a boss promotes another worker), we don’t always realize that stress and taking on too much can cause angry outbursts. The body and mind sometimes work together to tell us we need to cut back at work or find more time to relax. Motivating ourselves to enjoy life more and stress less is one of the best benefits of anger.