A number of factors—including... mental or emotional imbalance—might cause some to assume mistakenly that they have the heavenly calling.

WARNING: In the most extreme cases, individuals can end up as mentally unbalanced as Judge Rutherford. 

"And you can see them there, on Sunday morning.
They stand up and sing about, what it's like up there.
They call it paradise, I don't know why.
You call someplace paradise, kiss it goodbye."

        
-Eagles: The Last Resort


 Dave