I 'm pretty sure we've all heard and/or used the phrase "An empty well can fill another's cup." Or something to that effect. 

I never really thought of my well ever really getting that close to dangerously low or empty. And if it was I never thought I would say out loud or to others that I just needed space because I don't have anything right now to give. And the presumed guilt I would have if I did say something as such and I left someone in the wind for worse.

Well, here I go...