If events in the universe don't affect us at the moment they happen due to the limited speed of light, this means that even the hand we move doesn't influence another object nearby or far away because of that same limitation. This implies that we don't even have an impact on the movement of our own hand, despite the close distances, due to the constraints of the speed of light. This could translate into a certain continuity in what we do, which we might call willpower, because we act within a small distance and space, but these actions are completely insignificant on the scale of the universe. It's terrifying, isn't it?