"Plant a vegetable garden if you have the space, a window box if you don’t."
Our fast food culture tells us that food should be cheap, fast and easy, and that it is a product of industry, not nature. If nothing else, plant a single herb in a kitchen window. Caring for your plant, watching it grow, and eating it's yield is not only going to give you the freshest, most nutritious produce obtainable, but it helps you to appreciate the time it takes to produce real food.
All the tips given for the 28 Days of Real Food Challenge were compiled from "Food Rules", by Michael Pollan.