This may not be about what you are thinking, but only you will know that as I have no idea what you are thinking. That is the very kind of ghost I am talking about. I can think I know what you are thinking, but what I think only exists in my mind. What you think I am thinking only exists in your mind. It is as if we are surrounded by beings, which exist as we create them to exist. They play a role and function in our minds. How I think about them, and how I relate to them, is about me. How they exist or do not exist in your mind is about you. Don Miguel Ruiz talked about these beings as ghosts that exist in our mind; it is as if there is a ghost town, which lives in our minds.