I can rehash what you read in probably every health magazine article: "Eat brown rice instead of white," "Grill rather than fry your chicken breast," and "Eat more veggies!"
OR, I can try to give you tips that you can actually use.
At this point, you get it. We all get it. But we all don't do it. Why? Because grilled chicken breast, brown rice and a bucket of broccoli is boring, basic and not sustainable. Unless you want to be a big, cranky b****, I would highly recommend incorporating a variety of food in your diet (trust me, I've been there. It's not fun for you or anyone in your immediate area.)
But what I can do is explain why and how to vary your food.