When your job has free food & you grew up in poverty

Pretty much as the title says.

It’s so god damn challenging trying not to eat a lot when you work a job that you have full access to the food in the house. I have money for groceries now. I’m not dead ass broke anymore. Yet why can’t I stop taking in an obsessive amount of food when it’s free to me?? I feel scared I’ll somehow suddenly be back to that place where I can’t afford anything. I’ve never been somewhere where I’m allowed to eat for “free” and I should be extremely grateful I know, but I keep messing up any weight loss progress I make after a couple shifts.