The problem is that some foods have nothing but carbs, and if you eat a lot of those, you'll either consume too many calories overall or fail to get necessary nutrients. So eat fewer white, starchy foods like potatoes, and more leafy foods, squashes, and other colorful foods.

Similarly, whole grains bring a lot of vitamins and fiber, while refined grains like white rice are reduced to just the starch. It's just fine that those whole grains also have carbs in them. That's actually a good thing, becuase you do need calories for energy. You just need more than that.