How can we have a rich and fulfilling life? For Peter Drucker, one of the most influential thinkers of modern times, the secret was "living in more than one world"-enjoying a diverse set of interests, activities, acquaintances, and pursuits. Drucker was able to do this despite extraordinary demands on his time, and now Bruce Rosenstein shows how the man who transformed organizational management can transform the way you manage your personal and professional life. An enormously influential business author and consultant, Drucker also wrote extensively on self-development and self- management, but these writings are scattered throughout dozens of books and articles. For the first time Rosenstein brings these ideas together into a straightforward framework that guides you in building a multifaceted life and career. It's the next best thing to being mentored by Drucker himself. Rosenstein shares Drucker's advice for, first, honing in on your core competencies-developing your main talents, clarifying your values, and managing your time. With this firm foundation established he uses Drucker as both source and example to show how to enrich your life by developing parallel and second careers, making a difference in the lives of others through voluntarism and service, and using teaching and lifelong learning as complimentary ways of staying engaged and up to date.