The important question has nothing to do with whether the talk in your story is sacred or profane; the only question is how it rings on the page and in your ear. If you expect it to ring true, then you must talk yourself. Even more important, you must shut up and listen to others talk.
Stephen KingIt starts with this: put your desk in the corner, and every time you sit down there to write, remind yourself why it isn't in the middle of the room. Life isn't a support system for art. It's the other way around.
Stephen King