Far beyond feeding yourself...
I used to barely be able to feed myself. If I bought food, much of it would be thrown away, so I rarely shopped and knew almost no basic recipes... I ate almost every meal out.
Now, I have a weekly meal calendar that I plan out in advance and make a grocery list off of. We tend to make something in a big, huge batch (like shredded chicken) and then improvise off of that core all week -- enchiladas, stuffed peppers, SW Salad, etc. Most things require recipes.
We rarely improvise and never, ever shop without a detailed list.
My mother has the most amazing ability to improv wonderful meals at a moments notice. 6 people coming over for dinner in an hour? No panic. Let me see what's in the fridge.
She often shops without a list and she rarely has to throw away food. And as for recipes? It's almost all intuition driven.
Far beyond feeding yourself, these are the three ways most of your life can flow. Driven by
Pretty much anyone can have a system for anything (food, clothing, bills, work dates, etc.)... there is rarely an excuse for chaos.
Systems are easy to learn -- and easy to teach (although, that doesn't mean that they are easy to do!).
But intuition, it takes an internal understanding of the system. Some people seem to be born with a knack for understanding a specific system... but most people have developed it over years of mistakes.