If by chance you woke up this morning without the smile in your heart, then please don't try the smile on your face, because you know it's not there. It'll be on your bed pillow where you left it when you woke up. Your smile will however be waiting for you when you return home and are again ready to lay your head on your pillow.
So with your head resting on the pillow, hopefully you can smile now knowing that you at the least got through another day... be sure though not to forget your smile when you wake up tomorrow...
...the smile on your face will be meaningless if not accompanied by the smile in your heart!
And I'm from the States... please don't hold that against me... lol.