is violence the answer? or holding it in to destroy me in the future?

[justlovely:/]

say, hypothetically, when someone makes another angry, is it alright for the person to hit the someone? like, when an annoying friend makes me soooo angry, and doesn't know when to stop, is it better for me to ignore it and let it build up inside of me, or if i just get my anger out and totally just give my annoying friend a black-eye? please help. i need to know if violence works (it tends to, cuz when i hit someone, they dont mess with me again).