i am in the process of getting sugar out of my nutrition plan, and it is not easy. for me i am finding that at least at the beginning i am having to completely avoid it (which may end up being the case always, time will tell).
sugar can trigger the body to immediately want more sugar (and more food in general) and it can be hard to stop. meat is usually something that makes me feel less hungry and of course gives lots of protien. maybe experiment with going a few days without sugar to see if that reduces your cravings.
good luck and hang in there.