"I was always taught to not hold your anger in, unhealthy."
You're right, you do need to find other outlets.
After a while, I wasn't angry, as a matter of fact. I viewed it as sort of a sociological experiment: what would I do that would cause the least reaction. Would he notice I wasn't talking to him? What did improve his mood, and what set him off? I just kept my mind busy without interacting with him while he was drunk.
It is customary, when asking for help, to accept the experiences given without criticizing them. Of course, anyone is free to ignore what they don't feel is relevant, but criticizing every suggestion will mean some people will no longer waste their time answering.