Motivated someone to “become greater than himself” — you mean greater than Trump or greater than where he had been?
I think the answer of those who knew Trump privately as a boss, would be yes.
The “You’re Fired” schtick was one that was ginned up for TV. Not that Trump would never do it in real life, but when asked to ham up the role of irascible boss in an implausible situation, he agreed.
I wouldn’t mind too terribly much if he said that to Barack Obama some day early next year, though :-)
I never use this phrase but here I will, “OMG” I would love to hear him say that. I really would. I have faith in God that He still rules the nations and appoints kings, etc.