You've got to realize that in any competition there is always a winner and loser. When it turns out that you're the loser on a given day, you can be a graceful loser, but it doesn't mean that you're a loser in the sense that you're willing to accept losses readily. Concede that on that day you weren't the best and that you were beaten in competition. But that should make you more dedicated and hard working. It's wrong to accept defeat as a loser. Be graceful about losing, but don't accept it.