Leadership is acting in such a way that moves toward accomplishing goals by using personal capabilities.
Although Komives' reading was about group forming rather than leadership, the aspects of group forming relate also to leadership itself. While reading Exhibit 6.2 in Komives' reading, it struck me that there are many forms of leadership within a simple group. For example, the person in a group who summarizes information given in a meeting must exhibit leadership within that particular task. Leadership is more overlooked than I once thought.
Komives, S. R., Lucas, N., & McMahon, T. R. (1998). "Interacting in Teams and Groups." Exploring Leadership: For college students who want to make a difference (pp. 165 - 194). San Francisco: Jossey-Bass.