No one remembers who came fourth.
I try not to worry about things that I can't control.
From my training I can get a good idea of what I'm capable of.
Never set limits, go after your dreams, don't be afraid to push the boundaries. And laugh a lot - it's good for you!
The biggest danger is trying to put too much pressure on yourself, trying to get in too good shape.
You can wish as hard as you like but all that really matters is the shape you're in on the day of the race. I've always felt these really big races aren't necessarily won by whoever is the fastest. They're won by the athlete who is the smartest and in the best shape on the day.