A mess in a fixed area can serve as a reminder of your mental limit. When your space is “full”, use the opportunity to take care of something and clean it up a

A mess in a fixed area can serve as a reminder of your mental limit. When your space is “full”, use the opportunity to take care of something and clean it up again (don’t buy more shelves or more boxes, for example). And ideally, entirely get rid of things you are not using. It’s the same with computers: you don’t want to let yourself do the digital equivalent of buying more shelves or boxes (don’t let yourself easily create even more new desktops or folders, to store an ever-increasing list of tasks); let your screen fill up with things to do and then use that pressure to take some of those items off your list.