Oh, I have a soft spot for sushi too! I assume you have places called a Sushi Train? When I go I avoid getting rolls, and stick to ships, or anything that has the LEAST amount of rice - as carbs are the killer for me, instead focussing on good fats - fish, avo, and avoiding the fried chicken and teryaki! Also getting miso soup, or soy beans are very filling as well and not as naughty.

An idea you could try in your diet is replacing boxed ( I assumed boxed) cereal with more wholegrains. A great breakfast is porridge - rolled oats (not instant, or quick), 3 prunes, grated apple, cinnamon, a little honey and milk. This is reaaaally filling, high in fibre, folate. And it's also cheaper! I could seriously eat this for every meal. I'm obsessed!

Good luck! :D