I recommend this article by Eli Cohen and Noel Tichy, about their leadership research.
Some of their key ideas:
To develop others, leaders must have a teachable point of view.
A teachable point of view is a leader’s opinion on what it takes to win in his or her business and what it takes to lead other people.
A teachable point of view involves in-depth preparation and you must never miss an opportunity to communicate it.
Leaders create stories about the future of their organizations. A teachable point of view becomes the basis for leaders to present a dynamic, compelling story to others.
These stories create a case for change, a vision of where the organization is going, and an understanding of how to get there.
Once leaders have a story, they take bold actions that bring about massive and lasting change.