Great way to get us all to think about how we are spending our days.
Reminds me of a quote,
"Every morning you are handed 24 golden hours. They are one of the few things in this world that you get free of charge. If you had all the money in the world, you couldn't buy an extra hour. What will you do with this priceless treasure?" Author Unknown
Another one that I really like is:
"What I do today is important because I am exchanging a day of my life for it."