I've been writing a screenplay about a man that has three distinct personalities in his head. I do like where I am taking the story as there is a lot of dialogue with occasional heavily violent scenes but what I am afraid is that I might be telling a story that's overdone. If the execution of my story is good enough, than I probably shouldn't worry too much. It's just that I worry a lot about originality. The audience, whether it's the film or book audience seems to be on alert whether books/movies are unoriginal or a just a plain rip-off but if split personality stories aren't as common right now, I might have some confidence.