The central idea of the book "Getting Things Done" is to help individuals and organizations increase productivity by implementing a system for organizing and completing tasks. Capture: Capture tasks as they come to your mind by noting them down. Frees up mental resources. Clarify: Elaborate on the task. Question its relevance and context (work/family/personal). Decide next steps and actions. Organize: Sort your tasks into projects. Add start dates and deadlines. Always know what to pick up next. Review: Go through your tasks for the day. Reschedule or prioritize as needed. Engage: Be consistent. Think about how good you feel completing tasks.