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 - Forest
If you dream you are in a forest full of trees then things will be calm in your life and your wishes will come true. If you are lost in a forest and are wandering around then the efforts you make to achieve the things you want will tire you.