Life can get hectic, and it's important to have a way to cope with the pressure. Self-reflection has been a tried and true method that is worthy to have in one's toolbox.
For those who don't have easy access to a puddle (generously provided to me by the Melbourne winter), you'll have to settle for the mirror, download the PDF or get the print to view the little smiley face. And of course, not forgetting to view your own smile the next time you stumble upon a puddle.