First of all, don’t worry about it! It happens. The worst thing you can do is beat yourself up. Remember, stress blocks weight loss and repair. Many people get so upset, they punish themselves by starving themselves the next day. That just sends your body mixed messages, and will make it harder for you to stay on track. Don’t let one little mistake lead you to throwing in the towel. If you’re keeping a journal, write down what happened, write down how you felt, and plan the next few meals out in detail to get back on track.