There was an article in Yahoo Health recently about how one of the most productive diet tools is a food diary. You write down everything you eat, that you can examine later, and see just how much you're actually eating.

I've thought about doing a photo version of that myself. If you're up to it, what could stand out in the process is a sketchbook version of it.

Regular diaries? Common. Photo diaries? Obvious. A sketchbook - I've never seen one, nor even heard of it...