All real growth comes from mistakes. My son did not go from crawling to running a few months later without falling down. When he learned to walk, he fell after one step and got back up. He fell after 2 steps and got back up again. This pattern continued until he was running full speed through hallways of our home.
Every kid learns to walk in close to the same way. They fail, fail, and fail again until success finally comes. They are not afraid of mistakes. But something changes in us as we age. Our willingness to fail in order to get what we desire wanes. Fear of making a mistake takes over and we stop growing.
I often say that a tree that stops growing, starts dying. It is the same with an individual or an organization. Yet I see people trying to mistake proof their lives or their companies and they wonder why they feel like stuck where they are.