There's sometimes a tugging feeling you get to push further when you aren't being challenged enough or when things get too comfortable.
The ultimate story of success: When a nobody, who has never once in his entire life known the feeling of being remembered or respected, suddenly snaps and becomes a world dictator. On one hand it sounds just, but on the other, it illustrates the reason why a prosperity message has and needs its limitations.
I do not pretend to be able to prove that there is no God. I equally cannot prove that Satan is a fiction. The Christian god may exist; so may the gods of Olympus, or of ancient Egypt, or of Babylon. But no one of these hypotheses is more probable than any other: they lie outside the region of even probable knowledge, and therefore there is no reason to consider any of them.
But maybe that isn't possible. Maybe the mind of the majority is always the healthy mind, simply by virtue of its numbers. Maybe it's the definition of madness to believe I'm right and everyone else if wrong, to find my thoughts rational and reasonable when almost the entire world finds them damaged and flawed.