"It is impossible to live without failing at something, unless you live so cautiously that you might has well not have lived at all, in which case you have failed by default." — J.K.Rowling. 

There is an extraordinary difference between simply existing and actually living your life to the full degree. Living includes failing at times or taking chances but in the end it's a learning experience and contributes to the larger picture - the dream, the goal, accomplishments. Failing at something doesn't mean you need to stop. Looking silly, feeling stupid, losing, not seeing progression doesn't mean stop. You need to keep going, keep learning, keep believing in yourself and you will achieve things and live your life to the full extent. Failing at something doesn't mean you need to stop. It's an element of life that lets you learn and motivates you to push further.