Glass Bottle

Everything gets kept inside.
A cork is put atop to keep it there.
What might I find?
A penny for wishing,
A leaf to believe,
A string of thread to remember... What?
A paper clip to keep my thoughts together,
A four-leaf clover for luck,
A smile for patience.
All these things I keep with me
Close to my heart; they will stay.
This thing I speak of floats around.
Around and around and around,
Through the water of my body.
Where it ends up, no one knows.
How it gets there, a mystery.
When it arrives, no one can control.
It is destiny kept inside.
What?
It will always be a question.