Personal perspective: I've been trying intermittent fasting for about four years, and found it helped a little in the beginning but then petered out.
What happened was I did not eat until 7PM, then ate a little bit, but once I started eating I could not stop. It was never a matter of hunger, I barely ever feel hunger at all, it was like a deep primal drive to eat once the gates had opened - each and every evening.
The one thing that actually worked for me for a while was almost complete fasting - I would eat one meal one Saturday, one meal one Sunday, and that's all. The first two weeks were hard, but then it became quite easy, except the time aches Monday morning. It also lowered my resting heart rate by 10 BPM. I managed to drop about 40lbs in 6 month. Then I started on a really tough and stressful project at work, stayed late with coworkers, they ordered pizza night after night, I ate, and the fasting was over. Couldn't get back on the wagon since ...