Self control isn't something we should be relying on to lose weight. It's like the first 3 days of giving up smoking, every day.
Managing your (my) carbohydrate intake, and therefore insulin response, does seem to make "making the right food choices" easier. But I haven't lost weight despite a theoretical calorie deficit so I can't, really, recommend it.
I suspect I have, as the yanks say, "damaged my metabolism" by decades of poor diet, as well as taking drugs that make it harder to shed fat.
At the end of the day, there's more to who we are than how big we are.