I think the lesson to be learned is to avoid feeling discouraged when your meditation does not seem to be progressing. If you understand the process, you may understand that when change does come, it will come suddenly, and every moment of effort brings you a little closer to that point. The classical analogy is ice breaking up on a frozen lake. To a casual observer, the breakup seems like a sudden phenomenon, but it is actually due to a long period of gradual melting of the underlying ice structure. In Zen, we call it gradual effort and sudden enlightenment.
