Its a very good question and i've had a similar sort of pattern as you. This time i am bringing a different mind set to it.
You can read my thread which is getting a bit long now but on it, and around hte ridges, i make a few utterances about my approach from a psychological perspective that might help. also look at Think Positive's thread.
But in brief - because i am starting to get sick of the repetition and i'm tired - here's some clues that i am using and you can try too.
I am bringing my state of mind to this as i brought to quitting smoking. Its the same as the classic alcoholic approaach - you have to do it for good. No more cigarettes, no more drink if that's yoru problem and in my case no more sweest. I am finding my commitment is growing and my belief that's its possible is also growing. I know that sweest are a little different than cigs and alcohol because we have to eat but really we do not need sweets so we can actually think of them in exactly the same way.
I have an addiction to sugar. I used to reject that notion when people said but now i think if its not actaully possible to be addicted to sugar then metaphorically, i sure am. Its a metaphor that works strongly for me.
So i say analyse your weaknesses and quit them. If its hot chips, quit. If its chocolate, quit. If its icecream quit. If its yorkshire pudding, quit. You don't need it in your life. Its not making it better its making it worse. Its easy to live without these things.
What i am doing in part is focussing on how good i feel whilst eating well and being aware that i will always have to remain vigilant about food and weight. I can't ever afford to be complacent about it, though i believe it will get easier in teh long run.
One of my strategies is to keep a detailed food diary here for a year. Even htough i am going away for a couple of months soon, i will keep a record and summarise it when i get back. But doing the diary for a year, even after i've reached my goal weight, will help me install good eating habits.
I agree with amy. Your food must be enjoyable. If you can't cook, you must learn. You must eat delicious food but not food that is so delicious that you just want to keep eating more of it. Anything high in fat, salt or sugar tends to fall into that categoy so avoid them while you are on your weight loss. When i reach my goal weight, i will start to feed back in foods like cheese and even hot chips but i won't eat these beofre then. I have made that commitment to myself. But sugar is for life. If i have a binge and fall off, i have to get over it striaght away. Forgive and forget and move on.
Its about staying focussed on what's good and keeping your mind off what's not.