I took this photo last December, exploring the tide pools along the shores of La Jolla at low tide. There's a whole hidden world revealed when the tide rolls out. Lots of little sea creatures nestle into these stone apartments.

I happened across this shot last night in my photo library and decided to process it again. It's interesting how the same photo comes out a little different each time I process. In this case, I wasn't comparing against what I'd done in the past, or correcting mistakes. Rather, the shot caught my eye again and I felt like playing with it. 

Do you go back to "finished" photos and reprocess them? What drives you to do so?