The Principle of Priority
Some food for thought:
“The Principle of Priority states (a) you must know the difference between what is urgent and what is important, and (b) you must do what’s important first.”
― Steven Pressfield, The War of Art: Break Through the Blocks & Win Your Inner Creative Battles
Tagging actions in Nirvana with contexts, and the time / energy required, helps you quickly whittle down your available actions based on where you are, how much time, and how much energy you have throughout the day.
Having a short list of actions to chose from helps ensure that you make progress on the important things that matter “right now.”