I don't consider myself an expert in the why.
Leadership is not a rank, it's a choice.
My own career is a case study for what I believe in.
I like stories of the classic hero, of good versus evil, the ones in which the good guys wear white and the bad guys wear black... and I love a good sword fight.
When we point to obstacles we inhibit progress. When we offer solutions we advance.
If somebody wants to learn their why, either you help them or send them over to their course. All of this stuff helps.