Opening the door to hope

Yes,
I know;
it's obvious --
something about
grabbing the ring;
taking hold of life,
going for the gusto --
but did you ever stop to think
the ring's sole function
might just be
to hold open a door
that has a tendency
to slam shut?
What is it
that keeps us determined to trust
despite all the betrayals?
What is it
that keeps hope alive?
Is that the ring we need to grab;
to try again to open doors
that rusted shut so many years ago?