Schizophrenic I doubt, but how on earth could he NOT have delusions of grandeur? Rich as fuck, does the most stupid shit, still get elected to be the representing spearhead-figure of the US, does even more stupid things and yet people love him and even get tattoos of his fuckface....
If that doesn't skew your self-criticism to "dang, I really must be frigging awesome" in an unhealthy way, what could?