Every individual, regardless of what role they happen to be in, is a unique mixture if natural talent, learned skills, and mental attitude. Put another way: nature, nurture, and inner game.
The one that sets the top folks in any field or endeavor apart isn’t either of the first two, though they can help. The biggie is the last one. It’s also the most difficult to teach, to be taught, or to learn from observing. It is, however, the most valuable.