Don't take on things you don't believe in and that you yourself are not good at. Learn to say no. Effective leaders match the objective needs of their company with the subjective competencies. As a result, they get an enormous amount of things done fast.
Peter DruckerTeaching is the only major occupation of man for which we have not yet developed tools that make an average person capable of competence and performance. In teaching we rely on the 'naturals,' the ones who somehow know how to teach.
Peter Drucker