Cult deprogramming exists. It's difficult, but not impossible.

Narcissists are the exception sometimes. They are extremely reluctant to admit fault and they can't heal until they do. I think over 90% them never get better. For Trump, he's too old, evil and demented to be redeemed now.

See I'm generally opposed to human torture or death, but I falter in that belief when it comes to figures like these. After all only people have human rights