In today’s complex and fast-changing business environment, being an effective leader often means being adaptable. This chapter explains how leader self-complexity, the level of complexity and richness of how you see yourself as a leader, can enhance your adaptability. We also discuss how diversifying career experiences can foster this self-complexity. To facilitate your development, the chapter presents two self-assessment tools. These tools enable you to evaluate your own level of leader self-complexity and your career experiences, helping you to better understand your unique characteristics. We provide guidance to develop a personalized plan to enhance your adaptability. The insights and strategies outlined in this chapter are instrumental not only for individual leadership development but also for those seeking to promote leadership growth within their organizations.