Authors:

Sometimes when you're putting the work in it just seems so, so hard, and you never know when that work's going to pay off.

"Sharapova matches court brilliance with heartfelt speech after winning 3rd Grand Slam title" by The Associated Press, www.espn.com. Janaury 26, 2008.
Sometimes when you're putting the work in it just seems so, so hard, and you never know when that work's going to pay off.