Not the same person, but I'll add my 2 cents.

Eating less of what you always eat is HARD, because you eat that much to stay full. Feeling hungry 24/7 is super fucking hard, and I don't think anyone can maintain that for long.

But it's amazing how not-filling most processed foods are. Swapping out high-calorie, unfilling food for low-calorie filling foods made it pretty much effortless.

I didn't feel hungry, I didn't need to eat that much. But dieting is still hard, because I also ate out of habit. A bag of snacks in front of the tv, a snack with a drink after lunch, etc etc. Not because I was hungry just because it's tasty.

Breaking that habit was also pretty easy. See, you don't need to diet 24/7. I only need to focus on dieting half an hour every other day, when I'm buying food at the supermarket. If I don't buy snacks, I can't eat snacks, it's really simple. Anyone can be strong for 30 minutes every other day, that's easy.

So yeah, dieting is done first your head, and then in the supermarket!

Step 1: admit your obesity is your own fault, and thus within your control.
Step 2: buy better food, buy less crap.
Step 3: eat what you buy.
Step 4: keep doing step 2 and 3 forever.

Now that I’m used to eating less I’ve found that I simply can’t eat like I used to without discomfort.

Case in point: last night I got an Italian sub and was full after half of it, while previously I would have housed the entire thing.