Exactly its all in the mind. Just like the author implied. My way of thinking it is if you think that you are beaten thrn you are down but if you feel like you will win somehow someway you will find the strength to push on. The body we desire for is just a couple of hurdles away.I think motivation and ones psychological and emotional temperament are big factors in dieting. Whenever a person dieting becomes emotionally disturbed or problematic then slip ups usually happen, this is the same when one is trying to quit smoking or drinking. OMAD diet would be easier in a controlled environment rather than in an open environment.