PLEASE, PLEASE STOP PUNISHING YOURSELF!
Dieting and losing weight is not an easy feat. If it were, we would all be skinny bitches struttin' around within a week. When making a lifestyle change, you must accept that mistakes happen and yes, you will slip up and indulge in non-fat ice cream or fast food. It's not the end of the world! Live each day and be done with it. It's all part of the process. By punishing yourself (like making your FB picture a bad one), you're only placing more pressure on yourself that will just end with you failing and being disappointed. Think positive. You're beautiful and are doing some totally awesome!
Also, I too was a bit nervous about Latta's avatard, but fuck it! It was a reward for myself for learning to be confident. Buy the damn thing already, he'll make you look hot as hell.