I've recently started working on new pieces and doing so made me aware -- My creative muse has been missing in action for a very long time. Yes, we need rests, we can't be creative all the time but sometimes we extend those breaks longer than necessary and I'm guilty. I don't know if my daily walks and Art Journal practice have helped get my muse back but it certainly hasn't hurt.
I don't think it's a good idea to force things. Working on a piece when one doesn't feel inspired is going to result in a piece that just doesn't make it. But playing in a sketchbook, making collage papers, messing about with some paint just to see what happens -- maybe that will shift ones thinking.
Another confession. Sometimes I have so much fun making collage papers or playing with paints that I want to keep doing that instead of actually working on a painting. Maybe best for me to stick to working in the Art Journal for awhile. Even when I just make a mess like this bunch of experiments on a spread.
I can always cover it up with collage or gesso