I've picked up the Marie Kondo book The Lifechanging Magic of Tidying, which seems to be pretty popular. For those who haven't read it, the principles seem to be: tidy by category not location; decide what you want to keep (does the item bring you joy?) and discard everything else, then decide where to put the things you're keeping.
I can see the logic of dealing with a category of things in one go, as they may be spread in different locations & you need to see the full amount. I'm temped to try it. But has anyone here done it? How well did it work? Did you manage to apply the principles to the categories of stuff she doesn't talk about? Interested to hear your experiences.