Anger isn't something you can control. You can't always control the situation you're in or how it makes you feel, but you can control how you express your anger.Anger gives us strength and energy, we can use it as motivation and act in different things. But for some people, anger can get out of control and cause problems with relationships, work and even the law. Long-term, unresolved anger is linked to health conditions such as high blood pressure, depression, anxiety and heart disease.