Shop at the same stores. This is more of a frustration reliever. In a new store, you spend most of your time looking for things and walking up and down every aisle, which oftentimes leads to forgetting an item or two. being consistent you know when your regular store is running a special or if it is a good time to pick up an item or wait for a sale.
Of course if a store that you do not normally shop with is offering a deal to good to be true and you have a couple of coupons to make it an Awsome deal by all means make a trip there.
You don’t actually have to skimp on your groceries, you have to just shop a little smarter.