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.
We fail to see the purifying and refining effect wrought by the flames of adversity. These flames are not meant to consume but only to purify us. Disguised as adversity, blessings are showered upon us.
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.