But then lo and behold he traveled to Spain, a country which recognizes nobility, and tried arrogancing his way into a party (like "what do you mean I'm not on the list!?"). The press asked who the fuck is he, asked his parents, his parents weren't his parents, his parents had no idea who the fuck he was. Said as much publicly. "I have no fucking idea who this asshole is" said his father.
And then he was on TV in 2017 or 2018 as the world-class bullshitter of all time, but with much contempt. He had hours of talk-shows just for him, his law school professor going in front of the camera saying what he did was illegal because he pretended to have authority. He was a scammer, in particular he posed as a human-rights lawyer targeting victims of torture to get their secrets and extort them. Tried to do it to me, but you can't con an honest John.
So what happened, going back to your point? He brainwashed himself, told himself he was a prince 10 million times. But lied to himself literally 10 million times.