This book was the first to reveal and build on a foundational insight: we lead by virtue of who we are. Cashman's trademark "whole-person" approach is essential to success in today's talent-starved marketplace and provides a measurable return on investment. Framed in seven simple yet profound personal "mastery areas," this book serves as an integrated coaching experience that helps leaders understand how to harness their authentic, value-creating influence and elevate their impact as individuals, in teams, and in organizations. The third edition contains updated content in the first three chapters-"Personal Mastery," "Purpose Mastery," and "Interpersonal Mastery" (the most foundational chapters in the book)-and includes a new chapter, "Story Mastery: Leading with Inspiration." This chapter deepens comprehension of authenticity, provides a more significant sense of meaning and purpose, and inspires more profound interpersonal connection. For everyone from CEOs to emerging leaders, this long-awaited third edition advances the art and science of leadership, which makes the book even more relevant today than when it was first published.