Some advice from Miss Havisham

From The Well of Lost Plots, by Jasper Fforde:

Havisham beckoned me over to her desk and indicated for me to sit.

"Firstly, congratulations on becoming a full Jurisfiction agent."

"I'm not ready for this!" I hissed. "I'm probably going to fall flat on my face!"

"Probably has nothing to do with it; you shall. Failure concentrates the mind wonderfully. If you don't make mistakes, you're not trying hard enough."