Hi... I've been on MFP for a few months but I'm just straying into the forums now. My first experience with eating clean was when I joined Whole30 about 4 years ago. It was hard but the food was 100% clean if you stuck to it. I stayed on it for several months which was good because it taught me a lot but I knew I needed to adjust my eating to my situation which I've done. I still eat everything but in varying degrees but I read labels and don't put anything in my body that has ingredients I have no knowledge of. So that means nothing processed or packaged! Label reading will also show you hidden sugars that are in most of the foods we eat (think bacon; Italian Sausage, etc).
I'm happy to share any of my food experiences with anyone who is interested. Welcome & good luck!