Many years ago before I figured out I was an alcoholic I was heavily drinking at the bar. I insulted one of my oldest friends and his fiancée. That night I lost that friend and it wasn't until a few years later did I realize I had the problem. You may lose your friends, but it's ok. You will make more, but what you need to do it figure out why you got so angry and aggressive and fix that part of you. Not drinking will only solve a surface problem and until you get to the root of that problem you won't truly make a difference that will lead to life-long change for the better. I wish you luck and a peaceful future.