I do think we are "wired" differently. I never had an "off" switch either. I do think it is biological. And, to make matters worse, those of us that have become obese, have further changed our bodies in a way that has permanently altered our biological responses.
That being said, I do believe that we can overcome some of the biological differences through many different avenues. Most of them have already been stated.
1. Control our environment - don't introduce it at all, or do so in a controlled size/manner
2. Practice discipline - set rules that govern our behavior, and thus help us to eat like those "other" (I won't say normal) folk
3. I do believe that, while we cannot change our biological makeup, we can tweak our biological responses through a two-pronged approach. a. We can employ cognitive thinking/spiritual methods (Beck, Weigh Down, mindful eating, following natural hunger cues, etc.) and b. we can employ physical methods (eating more often, balancing our eating, eat slowly, volumetrics, etc.)
I think what works is very individual. What works for me, won't necessarily work for you. I love the analogy that Meg gives -"we are laboratories of one".
I can honestly say, while I know that I will never eat like a thin person, I am coming much, much closer as I travel the maintenance road. As I discover what works and doesn't work for my body, I do - fairly often - find myself stopping after a few bites of something I would have scarfed down in the past. I do take a piece of a cookie or dessert and find that I am satisfied. I have left potato chips sitting on the plate after eating only a few - truly not wanting any more.
I'm a work in progress. I don't eat like a thin person consistently, but I do believe that I am continually changing for the better.
I think this is one of the most exciting things about maintenance - I'm not done with this journey. There are still avenues to explore, experiences to have, and exciting times ahead
