Is it possible i have two personalities?

sometimes i'm just my normal anxious self.Then i can become so evil and angry in my thoughts and i don't have any value for life.I feel like i need to book myself in hell for some reason.I know i have an anxiety disorder and have always been weary of everybody around me since i was young for some reason.My dad was a violent alcoholic but i know he never hit me.When he used to start shouting and turn his music up really loud i used to put on my earphones and take myself to different place.I've always done this since i was young like i had my own fantasy in my head.Maybe that's got something to do with it.