More important than any stage which you will attain is your sincerity, your right effort.
For instance, when you listen to a lecture, you should not have any idea of yourself. You should not have your own idea when you listen to someone. Forget what you have in your mind and just listen to what he says. To have nothing in your mind is naturalness. Then you will understand what he says. But if you have some idea to compare with what he says, you will not hear everything; your under-standing will be one-sided; that is not naturalness. When you do something, you should be completely involved in it. You should devote yourself to it completely. Then you have nothing. So if there is no true emptiness in your activity, it is not natural.
So we say true understanding will come out of emptiness. When you study Buddhism, you should have a general house cleaning of your mind. You must take everything out of your room and clean it thoroughly. If it is necessary, you may bring everything back in again. You may want many things, so one by one you can bring them back. But if they are not necessary, there is no need to keep them.
When we realize that everything we see is a part of emptiness, we can have no attachment to any existence; we realize that everything is just a tentative form and colour. Thus we realize the true meaning of each tentative existence. When we first hear that everything is a tentative existence, most of us are disappointed; but this disappointment comes from a wrong view of man and nature. It is because our way of observing things is deeply rooted in our self-centered ideas that we are disappointed when we find everything has only a tentative existence. But when we actually realize this truth, we will have no suffering.
Usually we find it very difficult to live in the evanescence of life, but it is only within the evanescence of life that we can find the joy of eternal life.