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 - Anxiety
If you dream that you are worried then, aside from the anxiety that you may have in reality and have transferred to your sleep, this means that you might be about to face problems and difficulties in your career.