Imagine this: The moment you have waited a lifetime for has finally arrived. Years of blood, sweat and tears have been invested to bring you to your date with destiny -- the women's Olympic marathon final.

The hopes of a nation of 130 million people are resting squarely on your shoulders and you know you are expected to deliver a medal-winning performance. You wake up determined to try to do things normally -- even on the most important day of your life -- and then, you accidentally wash one of your contact lenses down the sink in your hotel room.

But instead of panicking and letting it ruin your day, you just carry on, and running without either contact lens, win the silver medal at the 1992 Barcelona Games, finishing just eight seconds behind the winner.