We all have our weak moments for whatever reason. You realize what you did. Gaining back the weight you lost just feels awful I know. I lost 35 pounds a few years ago while working out at curves and going on a low carb high protein diet. It took me 9 months to take it off. I kept it off for a few years, but I have gained almost all of it back, and it only took a few months. We just go forward. Tomorrow is another day. The sun will come out whether its hazy or not it will come out to begin another day, and so must you. Dont think of your failures like the weight you gained back think about the weight you lost! That is your success! Think positive and try again tomorrow. I have faith in you!