One thing that might help - I find that when I am actively reading pro-primal material, my desire for conventional foods disappears. Primal Blueprint, Paleo Solution, Good Calories Bad Calories, Why We Get Fat, and others - keep before my eyes and mind the realities of just how damaging grains and refined carbohydrates are, and I find resisting the poisons almost effortless.
42 yo female; 5'8"
Oct 2009: 205 lbs
Dec 2010: 167 lbs
Current weight: 158 lbs (first time under 160 in 17 years!!!)
Goal weight: 145 lbs