I am developing a new way of working, trying to keep my work looking fresh and inspired but not too slap-dash. I choose a subject the day before, or very early in the day, then spend 6-8 very focused hours trying to capture it. Painting something with ephemeral beauty (or strangeness) helps me to feel that I better get my impression down quickly, as the second day it will have changed too much. I take a black and white photo of the subject at the end of the day.
Then I turn the painting around and don't look at it for 2-3 days. When I finally check it out, I'm immediately struck by what works and what doesn't, and make a few changes or additions with the use of the photo, working for under an hour. I keep telling myself that the photographic image is not my boss- I'm the boss.
It's fun, more fun at least than working things to death and losing the original feeling of inspiration.