This [defeat] has taught me a lesson, but I'm not sure what it is.
![This [defeat] has taught me a lesson, but I'm not sure what it is.](http://cdn.quoteddaily.com/images/john-mcenroe/this-defeat-has-taught-me-a-lesson-but-im-not-sure-what-it-is.jpg)
This [defeat] has taught me a lesson, but I'm not sure what it is.