Is AUTHOR wrong in the post ? POST : Some quick back story, my actual father became addicted to alcohol in my early teenage years and I often got into physical fights with him about anything and everything.

So now I'm 21 and mystep father got drunk in the middle of the day for some reason and was being a bit of a dick. I don't like confrontations so I went to my bedroom to take a nap so my mother could get home and take control of the situation.

An hour or so later he came down banging on my door and shouting from the other side. I asked him what was wrong and he just mumbled something about me being a cunt. So I went upstairs and asked him what was wrong. He just went around in circles about nonsense, he had obviously been drinking more since I went to bed. He became irate and I approached him because I was sick of yelling out to him across the living room. 

At this point he braced himself against the counter and dared me to "try it", I was confused because I had no intention of doing anything of the sort. I tried to explain this to him but he kept screaming in my face and after listening to it for too long I grabbed him by his shirt and told him that he's not my father, and to stop acting like he was. 

He then tried to pull away from me &amp; when I didn't let go, he turned and shoved me. He was stumbling because he was quite drunk so I tried to get him on the ground to stop him from falling and hitting his head on the counter or table or even falling on one of our dogs.

When he was on the ground he started clawing at my eyes &amp; ears, trying to gouge them. At this point I realized he's playing for keeps and I've gotta stop the fight to prevent any permanent damage being done to me. So I punched him once in the ribs and once more square in the face. Being drunk, he felt none of it and continued trying to get his fingers in my eyes. With that, I gave him a really nasty headbutt right on his nose. Blood went everywhere instantly, it was pretty disturbing. He decided when he saw all the blood that he had had enough and stopped fighting with me.

He and I are cool now but my mother is not impressed with either of us. Given that I tried to walk away, deal with it with words &amp; only resorted to actual physical violence when I was at risk of permanent damage, AITA? 

TL;DR Got into a fist fight with step dad &amp; beat him up pretty bad, feeling bad about having to do it.
