Unlearning; Becoming Nothing

Do you ever feel as if everything we know is limiting? The art of unlearning is a way to gain a new perspective that is limitless. When we are younger we are given hard truths or facts. The sense of certainty and stability is comforting. In my late 20's I've learned that I know nothing. All I know is the ability to find safety and comfort. Instead of pushing past my comfort zones I want to live in this certainty. In the certainty I'm not 100% happy though. In this certainty I allow others to act how they please. So do I continue to live in this learned safe world where I know everything I want to know. Do I unlearn everything and drop the safety net? What is the fear? Why are we so scared of the unknown if it could be better? It is a fear of failure, a fear of admitting we knowing nothing. That nothingness somehow equates to our value in ourselves. Why can't we just be nothing and still be valued?