Yes, I thought it demonstrated the huge emotional turmoil that every top class individual sportsman/woman must go through.
I'm not sure that they all do. I was in a kayak club with a few world-class marathon kayak racers and most of them had a colossal ego (as in 'Lance Armstrong-sized) that sustained them through (very rare) failures. Some were quite nice people as well.
VP seems to be lots of contradictions. Slight build, yet excels in sprinting. Savagely competitive on the track, but very girl-feminine off track. Multiple-medalled world champion, yet doubts herself.
I found a very moving article.