This document discusses the roles and skills of managers and leaders. It defines a manager as someone who coordinates and oversees the work of others to accomplish organizational goals. Managers can be classified as first-line, middle, or top managers. The key functions of management are planning, organizing, leading, and controlling. Henry Mintzberg identified 10 common managerial roles grouped into interpersonal, informational, and decisional categories. Leadership is defined as influencing a group towards achieving a goal. The document contrasts managers, who maintain the status quo, with leaders, who challenge it and do the right thing. Qualities of good leaders include a positive focus, continuous learning, strong self-esteem, and avoiding negative influences.