The circle that is perfectly rounded signifies great things that are about to come in your life. If you made some circle yourself, beware while taking risks. If the circle is wobbly, then it represents the obstacles and barriers you will face while reaching your goals. When circle in a dream is broken, then it signifies break ups within your love relationships. The circle could also indicate the same things you do over and over again.
Read more about dreaming of Circle in other dream meanings interpretations.