About once every couple of years I get the itch to go all minimalist and get rid of loads of things. I have read a few of the books on the subject but have come up with my own way of going about the process. It's clearly not the best but works for me.
I pick a small area: a closet, a desk, part of a room. I then take everything out of that area and divide it into two piles. In the keep pile goes anything useful, or it can be something I just want to keep for say sentimental reasons. In the go pile goes everything else. The to go pile then gets divided into three piles: trash, donate, sell.
That is not really the interesting part. The interesting part to me is what I find that I decided to keep last time. I always end up wondering, what was I thinking. The one that really perplexed me this time was the ten your old can of spray paint. I've moved four times since I bought it and brought it along every time. It's not even a standard color I would ever use for anything. Also the box for an electronic I disposed of three years ago was a nice find.
I was happy I got to donate a bag full of my really fat clothes.
And I never do get around to selling the sell pile. In a year or so I see the stuff and think, oh yeah... never did sell that.