If you see that you are trying to walk the tightrope, it means that you are entering a very dangerous situation in your waking life. The subconscious mind of yours is giving you a warning to stop until its too late. If you fell of the tightrope, you will not succeed or you are afraid because of the risks to do something.
Tightrope dream meaning
Read more about dreaming of Tightrope in other dream meanings interpretations.