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Step 1 here is probably to find better food alternatives. Particularly the oil normally used for frying potato chips and chicken nuggets, has an effect on the liver that makes it near impossible for the vicious circle of over eating to be broken. This is why you will see a lot of talk here, about replacing processed foods first.
Reducing carbs is also known to make things easier. But keep in mind that it is good to go one step at a time.