I agree about time and art @thermoplastic and often I find myself starting something, even just adding color to an older illustration, and I get lost in the 'story' of it all and make various iterations as the world unfolds before me and before you know it the sun has moved across your desk and it's been half a day. We get a special realtionship with Time, we artists, we are lucky in that I think.
Thank you Donna - that is exactly it. On top of it all, I got quite a few unfinished pieces around that I pick up from time to time. I remember seeing some older (and then newer) Dali books and noticed that he changed and/or added to his paintings over time. I cannot find this quote anymore, but I had repeated it before: "A painting is never done until sold". Maybe it goes back to Da Vinci (with a little twist). Like, once you sold it, you can't monkey around with it anymore. But in my past, I had sold a large drawing, and then I missed it and also had more ideas about it, that I did it as a painting.
https://goinswriter.com/art-is-never-finished/