In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Shelling nuts
If you are shelling and eating nuts that are in season then you will have relief and delight as something good will happen to you. If the nuts are out of season then you will have problems and difficulties.