"I think hard and strategically at least once a week - doing a complete weekly review - so the rest of the week [...] I just work off of those updated, clear, current, complete lists." This is what Jason Womack writes in a recent post", reflecting on this simple but essential, weekly process. There, he also links to an older post on A systematic approach to cleaning up
As a GTD white belt like myself, to use David Allen's image, it is an habit which does not necessarily goes without saying.
As a rather disorganised person, I must say that whilst I enjoy the process of clearing and cleaning up, what can take hours to organise, can take just minutes to disorganise.