Don’t have time to read the whole thread but I can give you some ideas from the way I lost a bunch of weight.
Firstly, though it seems obvious once you learn stuff, but you have to realise that the whole weight gain being “genetic, and therefore hard to impossible to overcome” thing, is very rare. That is that people who are overweight because they have particular genes is so rare that its highly doubtful that most of the people that think they have it actually do. And besides, has there been an explosion of these genes since the 1970s and early 80s? Highly unlikely, the causes for big weight gain across the population is more about socio-cultural factors than genetics.
The thing to realise is that all of humanity is predisposed from the outset to efficiently collect every calorie we can from food, store it, and loose it very slowly and efficiently. This comes as a result of the bulk of humanity having been hunter gatherers for most of our existence. Humans, as we are today first emerged about 100,000 to 130,000 years ago, it was only about 6000 years ago that anyone started farming. For hunter-gatherer people, gaining enough food can be hard work so our bodies have developed very efficient energy systems to give us the best go at survival. The problem is now though that the food we get is very calorie rich and we don’t have to run across a jungle to spear it any more. So, if you take in more than you burn off, your body works to store the surplus for the lean times. We just don’t get the lean times any more.
Next, realise that much of this kind of stuff is habitual. I used to be a three family blocks of chocolate a day guy, plus a bunch of other stuff, and I’d sit watching TV munching on stuff all night. When I realised that it wasn’t so much what I was eating but the fact of eating, I changed it. It can be really hard to break a habit, so what I did was change the habit from eating a bunch of “bad” food (chocolate for example) to something “good” food, I started looking for foods with as little caloric value as I could, like rice crackers, and would much on them. And over time I managed to get rid of the habit all together.
Likewise, exercise is an habitual thing too. And if you can turn bike riding into a habit, like I did, and break through the initial hard phase of it, it will become something you actually have to do, or you just don’t feel good. And yes, the first part is torture to get it started. Its hard to motivate yourself to do it, and its hard to push yourself once you are out there doing it, and you feel like your legs will fall off and you can’t go any further. At first. But there are ways you can make it easier. Start with just a 10 minute bike ride. I used to just go a short way and back again. If you can push through, maybe 3 days a week for maybe a month, you will find it gets easier. By the time you have done that, a short 10 minute ride will get easy, go for 20 minutes, and slowly increase it. Once one goal gets easy, up the standard a realistic amount, so from 20 min to 30 and so on.
I started off at about 100kg and going for about a 5 kilometre ride three days a week, by the time I was really fit, I was at 78Kg and doing about 100KLM four to five times a week. If I can do it you can, there’s nothing special about it, just takes a little dedication.
Combine a gradual and realistic change in eating habits with a gradual and realistic change in exercise habits, and keep in mind that it doesn’t happen overnight, or in a few months, but a year even, you will loose weight.