I struggle mightily with eating less crap, though. (Especially chocolate.) Food is one of the great pleasures in life, and I haven't found really healthy food to be a good replacement for tasty junk.
Maybe advances in food production will bring hope?
You can also reduce how much you eat for your fun meals, but changing the boring meals makes a difference even if you don't.
100% Dark chocolate isn't 100% cocoa butter, it's the non-fat solids. If you eat some it's quite obviously not fatty, it's bitter and dry like a burnt coffee bean.
Edit: I'm mistaken here, dark chocolate is half fat, TIL.
As you add sugar to chocolate, the proportion of total weight that is fat goes down, and fat being more calorie dense than sugar, calories per unit weight go down.
It helps a lot to separate preparation from the moment I want to eat something, like cutting and packing an apple in the morning or washing a bunch of berries and carrying them in a jar.