Why is it so difficult to give up old perceptions when it is clear that what we really know is only a fraction of what there is to be known? The tiny fraction we see is not the only way it is. Whenever we say, "I know it," it means that we no longer want to struggle with other ways of seeing it. But the way we once saw it may not be the way it is now. Certainly the way something is now does not determine that it will always be that way because we are, all of us, on a journey whose ultimate destination is unknown.
To awaken means to realize one's nothingness, that is, to realize one's complete and absolute mechanicalness, and one's complete and absolute helplessness. And it is not sufficient to realize it philosophically in words. It is necessary for us to realize it in clear, simple and concrete facts, in our own facts.
Until we reach the stage of realizing our own nothingness, we cannot change. To begin to realize one's own nothingness as a practical experience is to begin to cease identifying with oneself.