GNOSTICS, n. A sect of philosophers who tried to engineer a fusion between the early Christians and the Platonists. The former would not go into the caucus and the combination failed, greatly to the chagrin of the fusion managers.
Failure is enriching. It's also important to accept that you'll make mistakes - it's how you build your expertise. The trick is to learn a positive lesson from all of life's negative moments.
"I can see nothing," said I, handing it back to my friend. "On the contrary, Watson, you can see everything. You fail, however, to reason from what you see. You are too timid in drawing your inferences."