My 2011 grievance is that I fell off the wagon in August (4 months in at that point) because I hadn't fully internalized that wheat makes me sick and I hadn't yet discovered that drinking water kefir kills my carb cravings (and allows me to eat yogurt.)
I'm mad at myself because that was at least a 10-lb episode in stupidity--I gained 5 and then had to take them back off before continuing my overall weight loss. In case you're wondering, I gained 5 pounds because the first foods I ate on my binge didn't include wheat AND I did another binge a couple weeks later just to be really, really sure the wheat made me sick. It did.
And I guess this week counts as 2011, doesn't it? Well, my final feeble whimper was, "How about if I only eat one little piece of shortbread per day?" Answer: the first one didn't make me sick, at least not immediately, but by the 3rd day I had a powerful allergic reaction. (Visualize hand/finger pointing at me.) Slow learner.