Psychology of leadership
Peter Drucker famously stated that "management is doing things right; leadership is doing the right things." Great leaders possess dazzling social intelligence, a zest for change, and above all, vision that allows them to set their sights on the "things" that truly merit attention. Not a bad skill set for the rest of us, either.
The Psychology of Leadership: New Perspectives and Research (Series in Organization and Management) [Paperback]