Yeah thats what happened to me after reading some of PKD's work. Started thinking I was the new Messiah or someone that was supposed to announce to the world that He was coming.
I got passed all that when I went rather agnostic.
I've often thought that maybe, just maybe all the religions are right and there is a God or what have you and all the "crazy" people saying the "end is near" are prophets but we get seen as mentally disabled and we lose our prophetic visions because of the meds.
Yeah, Crazy thoughts. I try not to go down that line of thought.