Truth be told, it's about as difficult as you make it. And it can be much more affordable than eating out all the time or eating convenience foods.

Your cooking techniques matter, for example. Just about everyone these days knows that frying foods is unhealthy. Yet we eat them all the time at fast food restaurants. After all, it tastes so good!

If you like the taste, it's far better to stir fry foods at home. You only need a tablespoon or so of oil for most recipes, so you aren't adding so much fat. Plus you can add fresh vegetables to really make your stir fry delicious. And it's easy.

A basic stir fry takes some chopped meat, vegetables, a bit of oil and some seasonings. A lot of people use soy sauce in stir fry, and if you're using a nonstick pan you may be able to get away with using only cooking spray and no oil at all, or even skipping it entirely. Season it up with some herbs, garlic or whatever you like, maybe throw in a handful of cashews or other nuts, and you have a healthy meal that didn't take too much time to make.

Switching to whole grains helps as well. Stop buying white bread and go for wheat. Switch from white rice to brown. Whole grain pasta. These don't take any extra time and are much better for you.

If you're constantly pressed for time, get a crockpot or make extra portions when you cook. The crockpot can be started in the morning, so that when you come home you have a healthy meal waiting for you. Extra portions of many recipes can be frozen so that you have quick dinners or an easy lunch to take to work.

Changing your shopping habits also helps. If you keep chips, soda, ice cream and so forth out of the house, it's much harder to snack on them. Simple avoidance can work wonders.

You can still eat meat when you want to eat healthy. Just buy the leaner cuts. Most Americans eat more meat than they need to, so consider cooking less of it. This is another area where I've found stir frying to be helpful. You feel like you're getting more meat if it's cut into small pieces by the time it makes it onto your plate. Mixing it up with a lot of vegetables also gives the illusion that there's a good amount of meat there.

It takes time to change poor eating habits. It's a lot of fun eating foods that aren't so good for you. But you can develop a preference for healthier eating and still not find yourself crunched for time.