The Emotion of Anger

Emotions are complex; they cause different thoughts in your mind, depending on the environment imposed onto you. Emotions are mostly temporary; lasting not in years, but in weeks or days. However, there are other emotions which remain all those years. One such emotion, is anger. Anger is one of those emotions which destroy the soul. One which lingers onto your soul. I myself have no understanding of this emotion, since my 'anger' only lasts for mostly an hour or two. I do not understand the anger which lasts for years. Why hate someone so much for something he did once? Why should you keep that anger in you simply because this one time the person made a mistake? All of this anger is like setting your heart and mind on fire. Sometimes, the person even forgets why he's angry, but still remains hateful. People change, and if they don't then simply forget them. Don't stay mad at them simply because of one thing they did. You have your whole life to live, don't waste your life on them. Use the little time you have left.