Perhaps I was too flippant in my reply. I didn't trust or was too trusting with the lot of friends I had, and due to my extreme paranoia, I would have psychotic fits. I used to be able to contol them to just home. People outside don't think that's cute, I don't care how close a friend it is. The friendships stop when you take trust away from the people who did nothing to deserve it being taken. I don't leave my home or answer my door during the day if someone should knock on it. If I don't sit in the same place with my back in the corner, able to see who passes my windows, surrounded by things that make me feel safe, everyday in my house, then OCD takes over the paranoia, and it's more pills to calm me.
Perhaps our paranoias differ. For me, the only way to get a leg up on it, is to try to make jokes about it, or confront it when I can.