Peaj, you're going about this all the wrong way my friend. A healthy diet will never leave you feeling washed out or hungry. Fill up on veg, fruit, lean meat and fish, and healthy fats (peanut butter, avocados, nuts, oily fish and olive oil).
Your body needs calories to actually burn fat. Give it too little, and you'll end up slowing your metabolism down and storing fat. That's definitely not what you want.