Do you have that negative voice in your head, the one that just won't go away and keeps telling you what a mess you are? If so, it doesn't mean you're crazy. In fact, it actually means you're programmed well to stay alive.
Our mind is like a very special movie projector that happens to work both in both directions: It projects information, and it receives information. Think of your thoughts as "filters" that are placed over the lens of your projector.