It comes down to planning meals and a certain amount of acceptance that what you’ve got in the house is what you eat, period, even if the specific food isn’t what you’re in the mood for at the moment. Fast food, doordash etc are difficult habits to break. They reward your desire to have what you want when you want it, which is a big reward, and can make living on your own food feel like a punishment by comparison. But that feeling is just part of the habit. Eventually it goes away.