I've had those thoughts sometimes. I don't have a big history of self injury, but I have done it before and I've been struggling lately with hitting myself in the head and it's scary because I've read it can actually do brain damage after a while. But definitely get help any way possible. I've finally started to get help for my issues by talking to my old youth pastor. Sometimes someone like that I think can actually be better than professional help in way because you have a connection with them. I wish you luck with getting rid of those thoughts though. I know you can do it and you may not know me, but I like to help people in any way I can and I'm always open to talking about anything.