Ultimately, we all have to decide for ourselves what constitutes failure, but the world is quite eager to give you a set of criteria if you let it.
Humans have a knack for choosing precisely the things that are worst for them.
Professor,” Harry gasped. “Your bird — I couldn’t do anything — he just caught fire —
On the other hand, the Prince had proved a much more effective teacher than Snape so far.
Potter! There are hundreds of people thundering through my pub!
For that was the terrible power of the dementors: to force their victims to relive the worst memories of their lives, and drown, powerless, in theirown despair. . . .