I had enough

So I’m 21 now and everything was fine until 2012. I was on a very hard university in my country but suddenly everything went wrong. I failed 1 exam and they kicked me in the end of the 2nd year. I hated myself and my entire life. My parents started to telling me that i failed because of games and lazyness, but they don’t know how many hours i was learning a day and yes i play like 2 or 2,5 hours a day. I don’t drink or smoke or use anything and I’m always bad. I have enough about that i always helped to others with their IT problems for free, and everybody just tells that I’m a PC nerd or a moron when I’m not there. So i had enough and i found a blade and i started to cut through my wrist, but when i reached the vein i stopped. Sometimes i’m better but then again something happens and i start to think about doing it again.