Just keep in mind, with any change there comes some struggle. Our bodies are like objects in motion. They resist change. However, once set in the right direction good things can happen. There are few foods that are strictly taboo.
Most foods are acceptable in a healthy diet.
You just need to learn how to incorporate those foods into your life. Where their place is, so to speak. Americans, have a tendency to eat way too many fats and sugars. These are foods that are very high in calories, but offer little in the way of nutrition. Fast food restraunts are a big perpetrator of this trend.