First of all, super congratulations on losing all that weight in the first place, that is a huge accomplishment. You shouldn't be so hard on yourself about back-sliding a little bit, it happens to everyone. The important thing is to get right back on and start making progress again. Also, you might want to re-evaluate your plan. Was it too demanding? Or too difficult to maintain? I would try to find the reason you fell off, so you can prevent it from happening again. Good luck!!