We can all sympathise with you Aquagirl, as I am sure most of us have one item we just cant give up, or control the urge to have!
Cadbury's have a lite chocolate? You really shouldnt have told me that one!!!!!!!
I am going through the same with sugary treats, I am trying hard though to control it. Try and have a big glass of water first and then see if you really need or want it. I have found it helps a little for me, or I believe Kate (correct me if I am wrong!) keeps suggesting the Jarrah Chocolates? They are really yummy and it works too!
You can't dwell on the past, all you can do is change the future. (its easier said than done).