My thesis is a nightmare from which I am trying to awake

I feel like I've said the same thing seventy five times, but I haven't said it at all. For my literature review I have five categories, but everything seems like it could go in every category. How is this possible. When do I get to write my own thoughts? When do I get to say something I think instead of trying to write out what has already been said for the last eighty years? Now I know why people like to analyze new books, there aren't that many people to cite. Or maybe I should pick someone really old who isn't popular, so not popular that nobody has said anything on it. But would anyone care then? I've got to find somebody really old that is great and then I can inform the world. I need to make friends with a literary archeologist, then I could get access to an old manuscript and teach the world. What I need is a new (old) Chaucer, or Cardenio, I need someone to find Cardenio and give it to me. Can someone arrange that?