Stir fry is so easy and so healthy. Just cut up some veggies (or buy frozen stir fry packages) and throw in some protein. I don't use oil. Instead, I continually put a little bit of water in the pan so I'm steam frying them. Most of the time I don't even bother with the rice. I use balsamic vinegar or some other flavored vinegar as my sauce. (Vinegar is great at slowing down the absorption of carb sugars.) You can use peanuts as your protein, too. Just toast them for a few minutes while the veggies are cooking and then throw them in.
Slow cooking is a big money saver because you can buy the cheaper cuts of meat. Throw some veggies into a slow cooker on low (or heavy pan on the stove turned down to slow simmer), add a two-to-one ratio of wine (red for beef/pork, white for chicken) and water. Enough liquid that the bottom of the meat is in about 1/2-3/4". Toss in meat. Cover it with salt free Mrs. Dash for spices - then go to work. Literally takes less than 15 minutes to put together including cutting up the veggies.
I buy manager special meats as much as possible - the stuff that's marked down because it is near it's sell by date. The day I buy it, I separate it into meal size portions and freeze it. When I defrost it, I use it within 24 hours. You can save dollars on the pound.
If your budget is painfully tight you can use canned veggies and fruits but rinse rinse rinse the salt and sugary syrups away.
Instead of eating out, a lot of grocery stores have a salad bar with hot entres, soups and sides. While more expensive than cooking, it can be less than a restaurant meal.
Use nuts, seeds, beans as your protein instead of flesh - much less expensive.
Those who think they have no time for a healthy lifestyle will sooner or later will have to find time for illness.