A Person Who Never Made a Mistake Never Tried Anything New

If all you ever do are things you have already mastered, you will rarely, if ever, make mistakes. But that’s going to be a very boring life to live, won’t it? We make the most mistakes when we try something new.

According to J.K. Rowling, It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all - in which case, you fail by default.