Look where you want to go. Don't look where you don't want to go. Sometimes people look where they are afraid of going and that makes it much more likely they will go there.

The laws of thermodynamics apply to everybody. Yes some people need more or less food than others to stay the same weight. But everybody would starve to death if they didn't eat. And they wouldn't be fat then.

People eat a lot because they are fat. Being fat makes you hungry. It's analogous to a kid growing. They aren't growing because they eat a lot, they eat a lot because they are growing.

How did they get fat in the first place? By eating the wrong things. Processed food, sugar, etc.

You are much less likely to get fat eating whole unprocessed foods.