Failure isn’t something to be terrified of. You should only be terrified when you’re not scared. Because it means you’ve stopped learning, that you’ve gotten complacent.
Here’s a secret at the heart of your question – I don’t have
the courage to perform. I still get scared all the time. And when I’m
not scared – like when I’m on stage improvising at my second home, the
UCB, I purposely do something where I don’t know how it’s going to turn
out, to make sure it gets scary again.