You'll never be brave if you don't get hurt. You'll never learn if you don't make mistakes. You'll never be successful if you don't encounter failure.
We have to take away lessons not only from our victories, but from every single one of our defeats as well. If a person is willing to take away something from each mistake, each failure and each loss, then a person has not lost at all. We all have to take defeats in life, because life would be meaningless if we never failed at anything. That doesn't mean that we aren't allowed to emerge from our failures as better than ever.