My hyperfixation is killing me

I'm drowning more and more unable to accept reality. I live several lives at the same time and the fact that this is unrealistically killing me. They are all different, but the end is basically always the same. The more hyperfixated I am, the more I take on the personalities of my characters. I live a life that is not my own, losing sight of the reality that I have.I just want to be myself.