I think that for some, if not many people, the reality is that a) no ordinary person eats ortho, is precisely the correct weight, is teetotal, exercises religiously, sleeps precisely the right amount etc etc and b) I think quite a few people have taken serious steps to address whichever of these things which are 'wrong'- and have been disappointed in the result.
I, personally, in my early 30s, went to the gym 2-3 times a week, did 2 classes, cycled 15kms every day, went vegetarian, minimal processed foods, minimal alcohol for a period of 5 months. I was a zealot.
And, to my disappointment, it made all but no difference to me. I lost a small amount of weight, I was a little fitter although I didn't develop any new muscle definition, and my general mood wasn't magically elevated.
This can come as a surprise to those who are apparently 'transformed' by dropping a 7 unit a week alcohol habit!