Pacmangirl, I totally understand what it's like to be busy. Life is nuts! I do, however, have a little bit of free time on weekends, and I spend some of that time cooking or prepping foods to eat during the week.
Freezer cooking is my best friend, I swear. I just make a full family sized pot or dish, separate it into small serving containers, and I freeze. Not only do you not have leftovers readily available, but you have a controlled portion of inexpensive, healthy, homemade food in just a few minutes. It's easier to pull something from your freezer than it is to go get fast food!
The easiest things to freeze are soups, chilis, and stews since they're in liquid - just cook a big pot and measure out 1-2 cups in small containers, let cool, and put in the freezer.
Other easy things to start with are meatballs, burgers, burritos, and nuggets. I like to use lean meats and shred the non-starchy vegetables into the meat before cooking. I bake the nuggets and meatballs, but leave the burgers raw. I cook, fill and roll the burritos, but I don't sear or bake them.
These need to be frozen on a cookie sheet, then once frozen, transferred to freezer bags. This keeps them from sticking together so you can take out the amount you want to eat.
I even crockpot 5lbs of chicken breast at a time, then shred it and freeze it in 2-cup portions so I have it readily available.
There are a lot of super quick recipes for dinner to be ready in 30 minutes or less.
Good luck! You can do this