Sometimes I feel like I'm baring my soul through my paintings, which makes each one so personal and valuable to me. That's why I wont make a very good professional artist I guess - I love my work too much it would be heartbreaking to part with any. :p
Here's one that I worked on for 12 blissful hours. I took a photo after each 3-hr session. They weren't all taken at the same place though, so you can see some color-distortions from the different lighting conditions.
Incidentally, this is the first painting where I played with certain areas using a pallette knife. Check out this sky detail. I love the element of surprise!