An appealing commemorative edition of Peter F. Drucker's timeless classic on leadership and management, with a foreword by Jim Collins. What makes an effective leader? For decades, Peter F. Drucker was regarded as the dean of business and management philosophers in this country. In this concise and brilliant work, he examines the most influential position in management – the leader. The measure of a leader, Drucker reminds us, is the ability to get the right things done. This typically involves doing what others have overlooked, as well as avoiding unproductivity. Intelligence, imagination, and knowledge can be wasted in a leadership position if the learned thinking habits necessary to convert them into results are not present. Drucker identifies five practices that are essential for business effectiveness and that can – and must – be mastered: time management; selection.