I used to think people could read my mind when I was younger. I also thought there were security cameras in my room and on my dog's collar.
BUT now I realize that it was just because I felt a lot of shame over my thoughts and felt that everyone knew "what a bad person" (because 8 year olds are such horrible people) I was. It was just another part of my anxiety getting to me, telling me I wasn't worthy of others. Now I know that's all rubbish.