I think the trick is realizing when you are starting to go in that direction. I catch myself sometimes getting delusional, it will usually start after the voices begin, I have believed so many things that have turned out not to be true, that I don't really know what is real and what isn't, at any moment I could have just been delusional again. I spend ALOT of time thinking too, about everything, all kinds of scenes going on in my head, with that and voices and being delusional, how can one ever really know reality at all?? Is there one?