I have been feeling exactly the same. Before Christmas I followed the plan well and lost a stone in 5 months. But since Christmas I have struggled and have not quite been able to keep to plan even for 1 day, putting 2lb on losing 2lb etc etc! But on Friday, I thought, enough is enough and decided that unless I want to put all the weight back on that I needed to put the last few weeks behind me and start again.
I looked through my books and planned the week with lots of new things to eat. I too have a very sweet tooth, which has been my downfall so I also decided to choose several desserts from the little recipe book that came with the Jan issue of the slimming world mag to help me and went and did my Asda weekly shop before and got all the ingredients.
Anyway I've just had a roast dinner consisting of a Quorn lamb style grill, roasties made with frylight and loads of veg and afterwards the chocolate orange trifle dessert I made from the recipe book and it was delicious and only 1 syn! I feel really good (and full) and feel I am back on track for a good week. Def recommend the recipes. This week I am also making strawberry ice cream and chocolate souffles mmm! Good luck x x