Lots of overweight people have never been hungry in their whole life. They eat on a schedule, so have an appetite, but real hunger? Never more than the grumbles of an empty stomach.

But it would benefit them to not eat until they are hungry. Then have a small meal. Feel what it's like to be satiated, not full, just satiated. The notice how long it takes to feel hungry again.

Then try being really hungry. Like "I woke up from a deep sleep at 3am and felt a ravenous need to eat something".

I've found that my sense of hunger was reset by this process. I get hungry if I don't eat a meal, but it's not a big deal. I can ignore it. Another 6 hours and I'll start to be really hungry. Then I can have something small.

I don't find it hard to keep a healthy weight any more. It's not difficult to eat to a slight caloric deficit and lose weight if needed.