A quick look at the literature on leadership theories shows how this field has been under constant change--from trait theories of leadership, where leaders were defined based on their exhibited traits, to contingency and situational leadership theories, where leaders' success was attributed to the interplay of their personal qualities with the organizational context, and finally to servant-leadership or post-heroic leadership theories being proposed now in which a leader is seen as one who carries forward the people to help them achieve what they want to achieve.