Well... people with BP tend to be a bit special
In my case, I overreact to pretty much everything, good and bad, and I guess I sometimes feel paranoid too.
It might be the way you are, and it certainly doesn't mean that it's a problem or a disorder.
When you realize that you are focusing on the neighbors that might be watching you, use your little voice inside you and tell yourself firmly to stop that. I got this from my psychologist, and it works.