The dream in which you see the piece of yarn may indicate some issue that is more difficult than it looks from the beginning. If you see the ball of the yarn, it means that you are able to figure out some answers to the questions youve had before. If you are winding the yarn, it means that you finally making the progress in your life. Everything has found the place where it supposed to be. The yarn could also indicate the relationships and the realization how to work them out.
Read more about dreaming of Yarn in other dream meanings interpretations.