I have been desperate for chip shops chips for a month, so after weigh in today I got a small portion. It was lovely, very much enjoyed and now im back on track - i see no harm, as I dont "treat" myself every day, and I could have gone further (i.e. large portion of chips, curry sauce and battered fish). I've treated it as a flexisynned meal, as I knew that I would be well over my syns because of this, but I'm back on track from tomorrow to see if I can lose 1lb this week.
We can't avoid everything for the rest of our lives, simply we need to change our attitude to not do these things too often.