I gave up white rice long ago and I hardly ever eat pasta any more. When I do, it's usually in a very good Italian restaurant, and I will plan for that. It's really not that hard. I don't really like the taste of ww pasta, but I will eat it, if served.
I can't say I never eat white bread/flour, but again, it's rare, and usually in the context of eating out. I buy real whole wheat (not whole grain) small slice Pepperidge Farm bread, as well as raisin bread, and deli flats. I occasionally buy the whole wheat ciabattas or loaves at a good bakery near me, but not often, as I would eat it all in a short time. The only bagels I eat are whole wheat. I just cannot eat simple carbs much and maintain my weight. Same thing with Asian food cooked in soy sauce.
I probably eat too much fruit and not enough veggies. I eat different salad foods a lot, but don't have cooked veggies that often as a side dish, as my stomach just can't digest most of them. It's not that I can't stand eating them, but it's not worth the pain.
I was a vegetarian for awhile in my 20s when I had to lose 25 lbs. It worked, but I enjoy eating a variety of chicken, thin pork chops, fish, and beef or veal now. However, that got me off of junk food and eating right. I would say I have beef once every 7-10 days and I eat fish at least once a week, sometimes twice. I eat meatless meals at least once a week, too, as I love beans. Also, I have nuts every day as a snack.
I do eat 1-2 pieces of dark chocolate almost every day, but other than that, desserts are few and far between.
I really would like to tweak my diet a bit more, but it already feels kind of restrictive at times, given how much I eat out and cook. I am going to try adding more vegetables in slowly and see how my stomach does. I weigh pretty much what I did in HS, and since I am close to 60, I guess I should be happy.