...if what happened to you subjectively when you die was completely a result of what you believed would happen to you?
The Mormons would go to a Mormon heaven. (Which, if you've ever spent any time in Utah, might be the same thing that other people would call Hell.) The Christians would go to a Christian heaven, and be issued harps and wings at the door. At least some of them would. Others, who really got off more on guilt than they did inspiration, might believe that they were going straight to Hell or Purgatory when they died. And so they would. Those who believe that consciousness just blinks out and there is nothing but darkness would blink out. End of story. Those who believe in reincarnation would reincarnate. And those who don't have any beliefs at all about what happens to them when they die would be shit out of luck. :-)