Win some, lose some.
You win some and you lose some. That’s all I have to say about that. End of story. That being said, I do think you learn the most from losing. If you win, then you think you did everything right. If you lose, you think about the other options, and how to make yourself better. [...]
Source: http://alisonstarnes.com/2011/07/29/win-some-lose-some/