Is it normal im so weird?

I'm going to make it short and simple. I feel as If I'm completely messed up in the head. Although people may not see it I have violent urges at times and have animosity towards them. During the time I felt normal and used to care about people something inside of me broke. Suddenly, being the center of my social group wasn't important anymore and neither was my girlfriend who was of no use to me either. Coincidentally, I began to study more and get more attached to school. I quit football, wrestling, and track to focus all of my attention to school pretty much. Within that transition of my life these last few years I have become rather aggressive and if I do say so myself sociopathic in a way. I found a new girlfriend and began using her just for her car. We would have sex multiple times and I would not care or have little attraction towards her. Everything that I used to enjoy has turned into anger and dissatisfaction. I have tried changing everything in my life in order to reach this sort of enlightenment so I wouldn't feel this way anymore;however, all that it's left me with is hatred, anger,and this feeling of anguish that I have carved out for myself in my own mind. I don't know whether I'm crazy or not. Despite this, something inside of me is certain that my determination is what will lead me out of this incarceration that I have carved out with my own mind. I don't perceive my mental state as a weakness; I see it as a tool that will help me make my escape from the very same incarceration I made because of it. All I'm really saying is I'm extremely fucked up in the head and feel as if I dont give to shits about this world at all or anyone in my life except maybe my family. Even then it seems as if the people in this world are just selfish and only care about them selfs. At least thats what I realize everyday. The world we live in today is a world of hate and violence. Regardless of this people go on their everyday lives as if nothing goes on.It makes me sick. Mark my words I'm going to do something about this world whether someone helps me or not.