When I was training to become a priest, I was at an advanced age. There were many potential places where I could have failed, and some folks were always eager to point out that I might not make it. In my mind and even on occasion I said, “there is no wasted effort in Buddhism.” If you think about this, no matter had I succeeded or not I would have learned and experienced more even in failure than I would have not trying.
Lotus Path: Practicing the Lotus Sutra Volume 1