Those who have power a) understand that the world is not always a just and fair place and accept that fact, b) understand the bases and strategies for acquiring power, and c) take actions consistent with their knowledge in a skillful way. Skill at anything requires practice, and power skills are no different.

Leaders are not modest, and more importantly, the extensive social science research on narcissism, self-promotion, and similar constructs shows that these qualities and behaviors are useful for getting hired, achieving promotions, keeping one's job, and obtaining a higher salary.

Possibly the biggest issue, however, is that performance appraisals focus managers attention on precisely the wrong thing: individual people. As W. Edwards Deming, the father of the quality movement, taught a long time ago, company performance often results more from variations in systems than from the individuals doing the work.

Knowledge is only useful if you do something with it.

Your most important task as a leader is to teach people how to think and ask the right questions so that the world doesn't go to hell if you take a day off.

Almost no one as I think most leadership books are a joke. They are, as I note in Leadership BS, frequently based on wishes and hopes rather than reality, on inspiring stories rather than systematic social science, and on "oughts" rather than "is."

One way to feel good about oneself is to not fail. The easiest way to not fail is to not try in the first place. So, I see lots of people give up before they start. That way they don't have to face uncomfortable failures. They can sort of "remain on the sideline while the game is going on." While this may make people feel good about themselves, it won't get them any power or success. As any successful salesperson will tell you, if you haven't been rejected, you haven't tried enough with enough people.