Using one’s natural tendency to procrastinate in a way that’s productive. Assuming the highest priority item on a todo list is the least likely to get done, then the items below it are much more appealing to do as a means of procrastinating. Therefore, being thoughtful about what is the highest priority item (it must not actually be that important) is a way of stimulating productivity of everything else. If the top priority task actually does become important and needs to get done then find an item that is higher priority.