Totally do chocolate. Especially right before bedtime. If you get lucky, the caffeine-like stuff in it will keep you awake all night - so you can lie in bed obsessing over your painting... If it's a really bad painting, melt the chocolate and paint it over with chocolate (cathartic). Seriously, for artists' block... I start with a small detail and just paint or draw that. Like a stick with interesting bark. Or just the hands, on a live model. Sometimes if you think of your piece as just for practice, and not as your next great masterpiece, it makes it easier to just go with what you think will work. Also helps to use cheap paper or cheap canvas...takes the pressure off. Another thing you can try: stop painting. Instead, pick up a pencil and paper, and draw some rough drafts of your painting - in pencil - just for practice. Do one that's just outlines. Then do another one that's just shapes of the dark areas and light areas. Then do one that's only about the background, etc. After you've done the drawings, you can paint over them with loose areas of color, and see what happens. The pencil drawings will help you see composition or contrast or drawing mistakes, and fix them. Painting color over the drawings, afterwards, will help you see how you could change the color structure to make it work better. I have not seen your painting, but let's assume there really is something off about how you drew the objects in it, or how you used color, and you really can't figure out how to fix it yourself. Go to the library and get out some art books, and read about drawing techniques or use of color -- you may not want to do exactly what the book says, but the author may have some ideas about drawing and/or use of color that could help you solve the particular problem you're having. On the other hand, if you have plenty of art training, and you know that today you're just in one of those moods where you don't even like your favorite ice-cream, by all means feel free to put the painting down and walk away before you destroy it.
