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 - Plank
If you dream of one or many planks of wood then expect both family and professional difficulties. Much effort will be needed on your part for them to be overcome.