I really admire you for coming on and being accountable. My diets used to be like that, too. I am not sure what's different this time. Maybe being here and having the support...I know it makes a huge difference for me.
Getting to the mindset of prioritizing myself is also a change this time. I am worth taking care of, and so are you. Look at your numbers...you have made progress. Maybe it's a setback, but certainly not a failure.
Maybe the next time you see yourself start to slip, write it down. Pros on one side, cons on the other. Immediate gratification versus long range goals of health, beauty, and untold riches (okay, maybe not the last one)! But you get the idea. Find something (a picture, a quote, etc.) that motivates you to push past the temptation and put it on your fridge and pantry. Reminders of why I'm doing this are very helpful for me; it takes me out of the "I want right now" moment and helps me focus on what I really want down the road.
Your outlook is awesome and the way you are looking at it now will get you where you want to go