There are times when I am doing okay outwardly but thinking if people could see the world from my perspective and hear the commentary going on inside my head I would be locked up for sure. I have a couple of delusions that I believe (at the time) but know others will not. It's semantics, but I had someone tell me that possibility of truth was a factor in whether a delusion was psychosis or not. For example, my most common delusion of immortality is not possible but believing your actual father is someone famous who was alive and past puberty at the time of your conception is a delusion that is possible.