What to do about rage?

I'm a 21 year old male and I have a huge rage problem. Tiny things and inconveniences make me incredibly angry and I have a very strong physical urge to punch/hit/throw things, just act out physically and the rage builds and builds until I do. I usually punch a wall or something but I need a way to release the anger in a healthy way. I don't like the tension I create for me and my dog by me being so angry. help!