It materially changed how I approach the food portion of my budget. I stopped dining out, and began dining at home. When I shop, I buy what is on sale, and on some sale items, I'll buy extra and freeze the rest (so I have enough of the item, to last until it's on sale again). I meal plan around what's in my pantry, freezer, and whatever is on sale that week. Most dinners are a protein, carb, and a vegetable, so I'm eating a more balanced, healthier diet with less processed ingredients.