David Allen
Achieve a "mind like water" by offloading every commitment, idea, and task from your brain into a trusted external system, freeing your cognitive resources for focused execution and creative thinking.
You must capture every single task, idea, and commitment into a trusted external system to eliminate the psychological stress of unresolved open loops.
Translate vague obligations into clear, physical next actions before storing them to remove the friction of decision-making at the moment of execution.
If a newly clarified task takes less than two minutes to complete, perform it immediately rather than expending the effort to track and review it later.