What does it mean to be "on edge?" What are we on the edge of, and what would happen if we went over it? Would we fall? Would we fly? Would we take a dive and land in a pool of water, or on our head? Would we get mad? Lose our minds? Laugh out loud? Would it be a relief to not have to hold on anymore? And what are we holding on to anyway?
I think we hold on to control, and that control is the thing we are most afraid to lose. But what a grand illusion! I'm not sure we ever really have it anyway- at least, not to the degree that we think we do.
I can't lose control if I don't have it to begin with.