An action plan improves your ability to reach your goal by helping you think about what you need to do, determine what resources you need to draw on, and plan for the learning you need to accomplish. Your action plan should incorporate ways in which you can gather information that will help you develop your skills as a leader. For example, you can
Learn from a challenging situation.
Learn from ongoing feedback (including assessments).
Learn from a role model, mentor, or coach.
Learn from reading publications or attending courses and ...