In my opinion, never trying is the worse as compared to failing. This is because, in future, you will always wonder what would have happened if you tried therefore, you end up regretting. Failing gives as more experience to know what to do or what not to do when the opportunity avails itself again.
You will never find any truly successful person who did not try and fail. Many of them failed numberous times and got up and went back at it. You will become great only by pushing yourself. Go for it and you will succeed.