None of us can come over there and provide you with better food. you have to really and truly fully own that ONLY YOU can change your diet, with each and every decision you make on what food you buy and what food you put in your mouth. Yeah, yeah, that might sound dumb, but I don't know "you should know this" on an intellectual level - we all do. I mean you need to really deeply understand it at an emotional/instinctual level. Being aware, every time you put a bag of chips in the shopping cart, you are choosing to buy something that you'll later eat when you shouldn't and will be unhappy about it, but you have complete control of changing it. Being aware, every time you bring a chip to your mouth, that you aren't happy about it, and you want to eat healthier, and you can. (And then putting down said chip and going and getting something healthier.) It's really easy to not be aware of what we're doing while we're doing it, because we have been told that multi-tasking is good. But I think that's often bubkis.
I presume you know what healthy food is out there. Fruits, vegetables, beans, rice, meats, dairy (if you can tolerate it), are all healthy (the vast majority of the time

), and do not have to burden you with any significant calls on your time. Heat up a can of beans, a couple slices of bacon chopped in, a can of tomatoes, and some molassas and cumin - boom! baked beans if you let it simmer for 20 min. Fruit doesn't even need to be cooked, and a lot of vegetables don't either. And if you want your veggies cooked, stick 'em in a pot with a little bit of water and steam 'em, then eat. (Add spices/butter to taste, of course.) But I find that when I'm in those situations - I've started not eating as well as I'd like because I'm not aware and not making the right choices - I really simplify what I consider "cooking", so it's not a burden. You don't have to please anyone with your cooking. Sometimes, you don't *have* to please yourself, you just have to feed yourself. (Of course, it's lovely to cook a scrumptous meal when you have the time/energy, but let's face it, that's not all the time.)