If you don’t want to forget a task you’re deleting, move it to a separate “someday” list of things you want to do if you ever find yourself with time but nothing to fill it with.
Once you’re finished doing, delegating, and deleting tasks, what you have left are your deferred tasks. These are all things you need to do that will take longer than two minutes to complete.
With a master list of your deferred tasks in hand, you’re ready to start prioritizing.