Rosie, your teacher must be very proud you've made it so far. Good talk, it made me really think about success and failure. I've never had a fear of failure, I've had a fear of missing out on trying new things in a way no one would recommend. I'd try something and if it didn't work out that didn't influence my choice of whether I'd pursue it or not; only further interest or, like you say, curiosity did.
