Everything you will ever do as a leader is based on one audacious assumption. It’s the assumption that you matter. Before you can lead others, you have to lead yourself and believe that you can have a positive impact on others. You have to believe that your words can inspire and your actions can move others. You have to believe that what you do counts for something. If you don’t, you won’t even try. Leadership begins with you.
From James M. Kouzes and Barry Z. Posner in The Truth About Leadership.