Think back to when you were racing others to achieve the best sales, working towards a promotion, eagerly trying to win a new contract or other situations that pushed you to rise above your peers.
Be sure to tell the interviewer that you rose to the challenge and were excited to see what you could achieve! Tell the interviewer about how you kept yourself calm while pushing yourself to be the best. It is a definite plus if you have cheered on your competitors and helped them along the way. Finally, be sure to mention your successful outcome.