I grew up in a box

I grew up in a box
good and strong.
I was happy,
there was space to breathe.

As time went on
the box grew smaller.
each day passed with more pain
less air.

And the confines,
they pressed down on
my shoulders.
still the box grew smaller

I curled my body,
adjusted uncomfortably,
still the box grew smaller

As new pains hit me
each day as I ran out of air,
I knew
It was I, not the box
that grew