I use Lose-it for tracking food and exercise but have no way to relate other variables like moods/even thoughts an time of day to how much I eat other than an old table of what when why from a behavior mod class 50 yrs ago!
I did something like this: you can read it in my blog: http://www.justintimmer.com/whydoieat/ if you make your food and moods in categories you relate them to each others.