Henry Mintzberg first became a star with his 1973 classic book, The Nature of Managerial Work, which overturned many standard views of what managers do and how they do it. Since then, Mintzberg has written many other important and bestselling books, such as The Rise and Fall of Strategic Planning and Managers Not MBAs. In this new book Mintzberg provides the most comprehensive, most authoritative, and most revealing examination of managing yet written. He updates his pathbreaking and influential findings in The Nature of Managerial Work, comprehensively analyzes research on managing over the past 35 years, describes his own powerful research on managing (including observing a day in the worklife of each of 29 diverse managers), and draws out the lessons of this research for understanding managerial work and becoming a more effective manager. Minzberg calls attention to numerous popular but false views about the nature of managerial work, separates fact from folklore, and provides the best information yet published on what managers do and how they do it. He analyzes models, characteristics, and approaches to managing. He examines commonalities and differences in managing in various contexts, including business, government, health care, and social services. He reveals how managing is affected by many factors -- including national and industry cultures, organizational differences, level of the manager in the organization, and personal styles -- and examines the various strategies that managers adopt to deal with these factors. Mintzberg then identifies the main "conundrums" or dilemmas that managers must wrestle with (such as delegating versus retaining control, balancing order and flexibility, and gathering more data versus needing to take action) and describes how managers deal with those conundrums. And he offers provocative and powerful new understandings of what makes managers effective and ineffective.