In '02, Federer was like most of the rising talents of the past 15 years. Guys like Rios, Kafelnikov, Stich, Safin, Enqvist, Krajicek, Haas, Korda had so many expections of doing well & they flamed out most of the time.
He was a favorite to win '02 Wimbledon, '02 French, '03 French & he lost in the first round of all three. He got so much criticism from the fans & media for those efforts.
Federer just sucked it up & had one of the the most impressive career turnarounds I've seen.
Sadly, I think being a headcase will continue to more common to great talents than being a great competitor(hope Gasquet, Ljubicic can prove me wrong, but I don't see it)