yea I've experienced what you have. Both positive and negative intrusive thoughts that just continue to rummage in my mind. The positive one I usually don't mind especially if its something fun that I enjoy. But the negative ones are the worst. Thats why I stay away from anything tv, music, media, etc that I know will give me anxiety. Thats really the only advice I can give is to not watch, read, or listen to the things you know will cause you to have those thoughts.