When you're 14 anything with a sword and a dragon is pretty cool. But when you're 21 and you've read 2 000 fantasy novels you start to realize that some of those books well they weren't really good. OK let's be honest. A lot of them were crap.
The common idea that success spoils people by making them vain egotistic and self-complacent is erroneous on the contrary it makes them for the most part humble tolerant and kind.