The document describes the most outstanding leaders the author has worked with and key lessons learned from each. It discusses several former leaders and their inspiring, ethical, relentless, well-connected, charismatic, flexible, assertive, challenging, pragmatic, and people-focused leadership styles. For each leader, it identifies similarities and differences between the author's approach and highlights characteristics the leader has that the author lacks. The overall message is the importance of learning from many leaders to develop a strong, well-rounded leadership style.