There are times in our life that things will go wrong.
We are desperate, we have no where to go, we have to fight our way out of this, confront what is in front of us.
Our backs are up against the wall !
We are truly in a difficult situation.
SO - you have no other course then to either give up or move forward and face what has you backed against the wall. And when your back is against the wall it gives you some thing to push off from.