You are your projects!
If the other guy is getting better, then you'd better be getting better faster than the other guy is getting better... or you're getting worse.
One size NEVER fits all. One size fits one. Period
As far as I'm concerned, the first business leader who was able to establish a cult of personality around his tenure was Lee Iacocca.
Management is about arranging and telling. Leadership is about nurturing and enhancing.
If the person you delegated to does the job twice as well as you would have done it, consider yourself a leader.