I think there is a big problem with the way the vast majority of the world defines success. Take this famous quote from Vince Lombardi for example, "Winning isn't everything, it's the only thing". From this viewpoint If you don't win you are considered a failure and you should be disappointed with your efforts. So lets say that is your definition of success, winning at all costs. What happens when you lose and you did everything you possibly could to win, but you still ended up losing? You start to view yourself as a failure because someone else was better than you at putting points on the scoreboard or crossing the finish line. With this definition I think we are sending the wrong message to athletes and young people.
I personally subscribe to John Wooden's definition of success.
"Success is peace of mind that is the direct result of self-satisfaction in knowing you did your best to become the best that you are capable of becoming. Only one person can ultimately judge the level of your success...you. I believe that is what true success is. Anything stemming from that success is simply a by-product, whether it be the score, the trophy, a national championship, fame, or fortune. They are all by-products of success rather than success itself, indicators that you perhaps succeeded in the more important contest. That real contest, of course, is striving to reach your personal best, and that is totally under your control. When you achieve that, you have achieved success. Period! You are a winner and only you fully know if you won" (Wooden 170).
Worry about the things you can control, not the things out of your control. Work hard and prepare to the best of your abilities. If the result is a win, consider that win a by-product of your hard-work. Be proud of your work and dedication, and by all means, enjoy the win. Just remember that winning isn't everything.
The above quote can be found in "Wooden" by Coach John Wooden