The circle symbolizes infinity, the circle of life and the eternal unknown. You, the dreamer, may have come to a greater degree of spiritual awareness, so the dream could be spiritual in nature. Carl Jung called all circular images a “mandala.” It is one of the most important dream symbols which represent the psychic center of personality.
It is symbolic of wholeness, completeness and unity of the self. However, as always, examine all of the details in the dream, as well as its tone and mood, and rule out the possibility of “going in circles” as the primary message in the dream.... The Bedside Dream Dictionary