It has been more than a decade since the first edition of Peter Koestenbaum's landmark book Leadership: The Inner Side of Greatness was published. Since that time world events have caused a dramatic shift in how we think about our lives and our work. Now we grapple with the fundamental questions. How can we live a courageous life and manage anxiety? Is it possible to reach greater heights of ethics and responsibility? Peter Koestenbaum, the preeminent business philosopher, has been a trusted mentor to business leaders worldwide. In this thoroughly revised edition of his classic book he shares his wisdom about the fundamental nature of leadership and shows what it takes to become an exceptional and passionate leader in today's complex world. At the very heart of the book is his Leadership Diamond model—a paradigm that challenges managers to transform their thinking and approach everything with fresh effectiveness in order to reap richer results and become great leaders.