For diabetics, balanced meals are important in keeping blood sugar under control.
My doctor advised me to eat 1/3 carbohydrate, 1/3 protein, 1/3 fat -- all in the same meal.
I have learned that I can't eat just oatmeal for breakfast -- I have to eat some kind of protein and a bit of fat to go with it. An egg, a slice of tofu, or a small handful of mixed nuts along with the oatmeal, will keep my blood glucose low.
For lunch, I have cut out all sweet goodies like granola bars, cereal bars, etc. which I always thought were a "healthy" snack. I only have one slice of bread instead of two. A little mayonnaise goes on the veggie burger or is mixed with tuna, and a piece of fruit and some kind of raw vegetable (like carrots or celery) round out lunch.
We have not altered our dinner menus, but I have substituted sweet potatoes for white, and whole wheat pasta for white (and eat less of it). If we are having a bean stew, I put feta cheese or cubed tofu on our green salad.
When we eat Chinese carryout food on Friday evening, I skip the white rice. There is usually some leftover brown rice from the past week. Chop suey does not send my glucose level sky high, but egg foo yung (which comes with a generous serving of gravy) does. Our favorite carryout makes excellent vegetable soup which is very light.
Now if only I could think of a balanced snack to have before bed -- sometimes I get a craving, but usually go to bed without snacking.