I've been having violent urges and thoughts of killing people. when I had a guitar in my hand, I had the urge to hit someone with it. Is this what happens to serial killers? I don't want to be like then but I'm worried I will. I also have this strong urge to cut my throat. I've talked to my therapist, and he said it just sounds like ocd. this only happens at night. my biggest problem is that I can't tell if I want to do these things. I really need help.