[bduerst]

It could also be narcissistic personality disorder (NPD), coupled with survivor bias.

You don't see all the people with NPD who crashed because they burned all the bridges around them, but the ones who do make it last long enough to make reality match their ego's dreams, if even for a short while. To someone with NPD, they don't see themselves as evil, and can be oblivious to how they take advantage of those around them.

It's something I've been thinking more about with the recent elections.