Ohhhhh Gemma!
I think you should try and take this weekend off.
Dont think about dieting/scales/shakes/pounds/points but take some time to think about the things you enjoy and perhaps the right answer will come to you.
Youre at the stage where u just have to be sensible about what u r eating, do u tend to have 3 meals a day? Try planning your food for a few days and make sure u fit snacks in. Do you exercise much?