Emotions: Smile(I)

I often wonder, how through pain, smile.
I often do it wrong,
Instead it appears, while things are wrong, Joy shines on my face.

Truly not, I am not stoic, not like that.
I still have to learn how to smile,
Yet the pain show through.
The distance between happiness and pain
Appear, but seem condensed at the same point
The show of happiness soon falls apart.