I like how you see success and failure. I also share this view and I strongly believe that every failure is actually a new opportunity to learn something new. People can look back and say: oh, I am 70 now, look at all the lost time and failures. But one can say: I am 70 now, I am taking my 69 years of experiences and put them to work so my 71 would be even greater.
Indeed if you stop you never succeed.