I've known a few people who definitely decide that food = enemy. Once that switch is flipped they view every morsel as a setback and don't consider nourishment at all. Then it's basically a 50/50 timeshare between (low-nutrient) draconian deprivation and (low-nutrient) pornographic junk feast, never realizing the former is causing the latter.
I can't address the self-esteem angle but I'm thankful every day for the profound calm I get from proactively capturing the right nutrients.
Lots of: urban hiking, cycling, sprinting
Lots of: fresh meat, seafood, eggs, organs, tubers, starch fruits, vegetables, meat fat, dairy fat, oil fruits
Some: cured meat, dairy protein, sweet fruits, rice, pulses, tree nuts, oil seeds
Minimal: soy, refined proteins, sugar, liquid carbohydrate, grains, refined oils, peanuts