I've enjoyed winning races in both 500cc and MotoGP and enjoyed leading the world championship and contesting it right up until the end.
Usually a feeling of disappointment follows the book, because what I hoped to write is not what I actually accomplished. However, it becomes a motivation to write the next book.
Once you understand the foundations of cooking - whatever kind you like, whether it's French or Italian or Japanese - you really don't need a cookbook anymore.