That is very much what is happening in most households and why the children of obese parents are more likely to be obese themselves. And it is exactly as you said, after you've developed said habits, they become comfortable.
What's good, though, is that you can replace those habits for different ones and create a new "normal", a new comfort zone. It does take time and effort, and leaving your comfort zone, but it's actually not as hard as our brains make it sound when you actually get around to it.

Exactly. This "Eat this and this and this, and don't eat this and this and this" kind of thinking is a large part of the problem.
But if you would only just change it to "Eat more of this and this and this, and less of this and this and this", it becomes a much healthier motto to live by.
What many people don't realize is that you can have cookies, doughnuts, cake, fast food, ... ... , but there's a difference between having one or two cookies, and having an entire package.
The book also speaks about that, and also notices that not all people can work with "moderation". Some people cannot stop at one or two cookies, or cannot stop unless they've cleaned their plate clean, and if that's you, that's okay. In the book I also describe strategies to help you fight that.

Thank you! :D
It means a lot to me!