Time management refers to using a range of skills, tools, and techniques to control how time is spent accomplishing tasks, projects, and goals. This involves planning, setting goals and priorities, monitoring time spent, and organizing and scheduling activities. The key aspects of time management are controlling events, taking responsibility for time usage, and setting smart goals that can realistically be achieved. Effective time management systems evolve through generations, from basic reminders and calendars to more advanced planning, prioritization, and focusing on importance over urgency.