You aren't alone. I've been self sabotaging for the last month. I was 285 in April, now I'm back to about 293-296ish. I think for people with 50+ lbs to lose, it's bound to happen at least once. I have a wedding in August so I don't feel like I have a whole lot of time to be doing the yo yo dance especially when I don't want to pay to get my dress taken UP a size!! I even stepped on the scale midday after a meal (why oh why) and saw that dreaded "3" starting my weight!!!!!!!!!! It is frustrating when I can start out so good in the morning, and then by the end of the day I'm eating cheez its and enjoying a sugar filled daquiri with my fiance - I don't even really WANT to - I just do. For me when I lived alone I had good willpower at the grocery store, which was all I needed, but now that I shop for someone else too who eats and snacks all the time it is definitely hard especially since I no longer have my old school/work routine. Stay strong. Try to take some time to review why you want to lose weight - how good you'll look in old jeans and how nice it will be to go clothes shopping, and how great it feels to break past fitness barriers and feel physically fit. There are hundreds of people on here to attest how good it is to get over the sabotage and be proud to move forward
How about you take it 2 days at a time? That's what I've been trying to do. I can do anything for just one day, and my goal is to do it again tomorrow.