Of course, to get to that point, you need to have a well-stocked pantry with healthy ingredients. With my great new kitchen and a good grocery store 2 blocks away, I think I'm finally at that point! For example, the other night I made a very tasty and very economical Mexican-style chicken dish just from stuff I had in the kitchen.
Here I took a package of chicken tenders (organic / free range / whatever the good label said), cut them into cubes, seasoned them with black pepper and cumin, and sauteed them with a whole bunch of my chopped frozen onions in some olive oil. Then I added a can of diced tomatoes with green chiles, about 1/3 bag of frozen corn, some chopped fresh cilantro, more black pepper, and some dried parsley. After cooking it down, I served it with some shredded fat-free Mexican cheese blend. It was delicious!
And this was all stuff I just had in the fridge, freezer, or cupboard. I like that I'm learning more about what things work together and can just buy them whenever they're on sale or when I've got room in my shopping basket, to keep around for nights just like this. Good stuff!