Time management involves planning and controlling how time is spent on activities to increase effectiveness. It requires activities like planning, goal setting, prioritizing and monitoring time spent. To-do lists are one of the easiest time management techniques, allowing people to map out tasks and say no to unnecessary tasks. Additional techniques include ABC analysis to categorize tasks into important/urgent versus unimportant/non-urgent groups, and Pareto analysis which suggests focusing on the 20% of tasks that can be completed in 20% of the available time. The POSEC method also prioritizes tasks around personal responsibilities before collective duties. Proper time management is important for improving productivity and reducing stress.