Smile though your heart is aching 
Smile even though it's breaking 
When there are clouds in the sky, you'll get by 
If you smile through your fear and sorrow 
Smile and maybe tomorrow 
You'll see the sun come shining through for you 

Light up your face with gladness 
Hide every trace of sadness 
Although a tear may be ever so near 
That's the time you must keep on trying 
Smile, what's the use of crying? 
You'll find that life is still worthwhile 
If you just smile

Smile - Nat King Cole