I wasn't obese, but overweight (10 to 15 kg above the baseline for my height), and i did had craving i thought i could not stop. A 3 day diet made me understand that the feeling of hunger is just that, a feeling, and some willpower was needed to ignore that.

Hormonal imbalance caused by overeating was in my case worst than the hormonal imbalance caused by lessening the amount of food i ingested, so it wasn't this hard to stop. Also my life improved a lot around that time (credit, job, appartment, relations), this might have helped too.