It's not really about the competition. Your biggest challenge in a race is yourself. You're often racing against time. You're frequently running everything through your mind. You're always competing against preconceived ideas. It's not really the person next to you that you worry about.
Nutrition doesn't have to be complicated. It goes back to the lessons you learned as a kid. Start with a real breakfast; don't ever skip that. If you're waking up early for a run, make sure you drink at least a glass of water and put something healthy into your stomach before you go out the door.
To be a champion, I think you have to see the big picture. It's not about winning and losing; it's about every day hard work and about thriving on a challenge. It's about embracing the pain that you'll experience at the end of a race and not being afraid. I think people think too hard and get afraid of a certain challenge.