I have to sort my stuff every year because I only have a small attic space to store things in. I look through old pastels, for example, and either scrap them totally or, if they’re on multimedia paper like Art Spectrum or even pastelMat, I chuck turps over them and scrub em around (gently) with a bristle-brush to remove the main image. Then I can coat them with pastel primer and start over (probably a couple of times before the paper gets too worn out). Similarly with any oil paintings on MDF board, out comes the sandpaper and off goes the image. It might sound like being a skinflint, but many surfaces are re-usable.
I’m rather restless right now in my painting, having reached a few plateaus, and am exploring some new techniques in pastel. Also having a play with monoprinting.
Starting over, refreshing a blog or website as well as one’s work, is something we should do every so often; it clears mental cobwebs, allows us to separate ourselves from our more average creations and give ourselves permission to go in new directions.