I found that when I cut bread/sugar/carbs out of my diet drastically for a short time (about two weeks), then I lost all my cravings. Now I am slowly adding them back in, at lunch and dinner, to see what I can tolerate adn what I can't.
Half cup of rice is fine. One cup triggers cravings the next day.
A whole soft pretzel triggers me.
One Red Lobster biscuit is fine, if it's the only grain at the meal.
One high-fiber waffle is fine, with berries, peanut butter, and low-sugar syrup. Two is too much.
One slice of double-fiber whole wheat bread is fine for lunch, but not for breakfast.
Oatmeal at breakfast is right out! But 3/4 cup of Kashi Go Lean is fine.
It's going to be different for each person. Just keep track of waht you eat, and when you have cravings look back at what you ate that day and the day before and see what carbs might be the culprits.
Something that really helped me with this was About.com's
"Can Carb Cravings be your Friend?" Hope you find it helpful, too.