In The Leadership Challenge, James Kouzes and Barry Posner tell us:
“We refer to it as The Kouzes-Posner Second Law of Leadership: You build a credible foundation of leadership when you DWYSYWD—Do What You Say You Will Do. DWYSYWD has two essential parts: say and do. The practice of Model the Way links directly to these two dimensions of the behavioral definition of credibility. Modeling is about clarifying values and setting an example for others based on those values. The consistent living out of values is the way leaders demonstrate their honesty and trustworthiness. It’s what gives them the moral authority to lead.”
DWYSYWD is not just for building a credible foundation with others. It is for building a credible foundation with yourself. If you want intense confidence in yourself, then get good at doing what you say you will do.
If I tell my wife or children I will do something, it gets done.