The key differentiator of leaders for me is whether they are selfless or self-centered. Do they see the people who work for them simply as assets to help them achieve their own goals, or do they consider it their responsibility to help their team grow and develop? […] To be clear, I’m not suggesting business leaders are entirely selfless. They are not volunteers, and many top executives are paid handsomely for the work they do. What I’m referring to is how people are wired as human beings, based on the values and influences that shaped them from an early age.