Which leadership trait involves the ability to listen to criticism? self-confidence communication humility goal setting

The ability of a leader to listen to criticism and act on those criticisms in the best way that he can can be attributed to his HUMILITY. It will take too much for a leader to listen to a criticism knowing that being a leader, he ought to know what should be done, what should not be done, and how things should be done but HUMILITY will allow him to take the criticisms positively. 

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.