This post requires all my usual disclaimers: I am not a doctor, therapist, nutritionist, or dietician. Please check with any/all of those other kinds of folks for advice from people with more education and training than I have. That said, the general comments below are within the scope of my practice.
What we eat affects how we feel. (Thank you, Captain Obvious!) Even if all that changes is that we don’t feel hungry anymore after we eat, we have changed our state of being. Since we’re going to make a change anyway, it might as well be a good change.
It is both easy and hard to eat healthy food in our culture. We have an incredible abundance of food and a boggling number of choices. (Digression: I used to worry that my kids didn’t eat a particularly varied diet. Then one day they were discussing whether Ethiopian food or sushi was better. I relaxed.) Unfortunately, a lot of the choices we have are not ones that are particular good for us. Food deserts exist. Food insecurity is a big problem, exacerbated by all kinds of societal pressures right now. We are stressed and it is way easier to get ice cream at the drive-through than it is to get a real, healthy meal cooked.
It's worth it, though.
We need to try to eat a non-potato vegetable fairly often. We need to drink water. We need to eat food that still looks more or less like it did when it started, not like a sad and pummeled version of itself pumped up with sugar, salt, and a bunch more chemicals.
Try an apple. They’re in season.