Our beliefs create filters on how we see the world and how we interpret incoming information. The trick is to stop believing it, when I think I am in a delusion I check with my therapist, I use him as a basis for reality, I let him tell me if i am delusional again and then I believe him. Reality is relative, but we can share realities with other people. That's why there are so many different church's, so many different beliefs, everyone seeing the world different. I suggest you go reality shopping. I am still shopping myself. Just to make sure I am still alive, I pinched myself, so yes, you are delusional again.