label each task with one of three priorities: “A” for things that are important and urgent, such as those with impending deadlines; “B” is for tasks that are important but not urgent, and can therefore be postponed if necessary; “C” is for things that are small, easy, and don’t require attention at the moment.

You start by completing the A tasks, crossing them off your list as you go. Then you move on to the B category. If you finish the B tasks, you can tackle some of the C. Lakein notes that these task priorities might evolve. An important obligation with a distant deadline, for example, might start at B, but then, as the deadline approaches, upgrade to A. Lakein’s intention is to help you make sure that you make progress on the things that most require your attention.