Leadership is a complex phenomenon that involves influencing others towards achieving goals. While managers focus on day-to-day operations, leaders inspire people by envisioning the future and motivating excellence. Effective leaders exercise power wisely, serve as role models, and create an environment where teams can solve problems independently. Studies have found that leadership traits alone do not determine effectiveness, and different leadership styles are suited to different situations. Communication is also essential, flowing down from superiors with directives, up from subordinates, and across organizations to coordinate work.