"Gray skies are gonna clear up
Put on a happy face
Brush off the clouds and cheer up
Put on a happy face
Take of the gloomy mask of tragedy
It's not your style
You'll look so good that you'll be glad
Ya decided to smile
Pick out a pleasant outlook
Stick out that noble chin
Wipe off that 'full of doubt' look
Slap on a happy grin
And spread sunshine all over the place
Just put on a happy face!"

~"Put on a Happy Face" from Bye Bye Birdie

Some lyrics to give you some tips on how to smile in case you forgot, and reminding you to do it everywhere you go. :-)

~Paint_splatt