The only time you fail is when you stop trying and give up. We're all just imperfect hot messes on a journey. Right? So the first 2 weeks are the toughest as you're aware. You just commit. One day at a time. Choose life. Choose health. Choose joy. Choose happiness. Choose lightness. Choose success. Every day, get up. Look in the mirror and rechoose those things for the day. Don't look back. Morale rarely improves with beatings. But, once you log in a few days of healthy eating and see the scale start to move again, and start to feel more energy, it will feed itself and you will gain momentum.
You can do this! Log and post often. Log weigh and measure your food. Keep a MFP food diary. You can do this!!