Sustainability is the greatest challenge in leadership development. Dave and Norm have done the best work I have ever seen in tackling this challenge! While some books can help you become a great leader, this book can help you remain a great leader! While good leaders understand the practice of leadership, great leaders practice their understanding of leadership. Leadership Sustainability shows you how!Marshall Goldsmith, author of New York Times bestsellers MOJO and What Got You Here Won’t Get You There, World’s #1 Leadership Thinker (Thinkers50 global survey – sponsored by Harvard Business Review).