My father told me never to take my foot off a ladder to kick at someone who was kicking at me. When I did that, I would no longer be climbing. While they are kicking, my father told me, I should keep stepping. They can kick only one time. If I continued to climb, they would be left behind. In trying to hurt me, to impede my progress, they would get left behind because they allowed themselves to get sidetracked from their agenda.