I have to agree with @Pam_2-06-2017. You have to find the strength and perseverance within yourself to do what you need to do to reach your goals. It's as simple as that. My partner lost 115 pounds from February 2016 until December 2016. That time period was my six month pre-op diet program and three months of post-op life. He got to his goal of 200 pounds (he's 6'1"). At that time (end of December 2016), I weighed about 250ish, and still had a ways to go to get to my goal. Since then, he has eaten what he wants (and gained some weight back, too). Crap is in the house all of the time. He wants fast food, so we go through a drive-thru. You know what? I buy it at the store for him. I hand him the credit card in the drive-thru line. I hold the ice-cream cone while he gets situated in the car. But I don't eat any of it, because I know that isn't what I am supposed to do.
The mental part of this game (whether it is pre-op, immediately post-op, or 2 years out) is the hardest part, and where the war is won. I wish you the best as you continue. I'd recommend working with a psychologist and/or a nutritionist to help you get re-started. Having an experienced person to talk to often really helps.