Pictured here is a still life I'm painting from life in my studio. I have a light shining on the setup, and blackout curtains to keep daylight from interfering. I think that the next time I might try painting something illuminated with daylight, and try to restrict my painting to the same time each day (or paint really fast!)
I definitely appreciate being able to see so much more working from life. I also think that working from life makes it easier to stay aware of the object as a whole and keep colors and contrast in check. Probably the most difficult part is the initial sketch, having to compose the image without seeing it already cropped as in a photograph.