When sitting in meditation, do not seek for spiritual penetrations.
When sitting in meditation, do not seek for spiritual penetrations or for any efficacious result. First, make your body clean without any sicknesses. In this way, no deviant energy will be able to penetrate your boundary. If you are constantly filled with great proper energy and have an indomitable spirit, you will naturally give rise to proper knowledge and proper views. Your conduct and actions will accord with principle. This is the benefit of sitting in meditation.
If, in every instant, your state of mind does not give rise to ripples such that you are without afflictions, without mark of right and wrong, and without mark of people and self, then you are applying effort and this is the efficacious result of sitting in meditation.
As for the efficacy of investigating Chan, you can experience it for yourself. You can return the light and illuminate within and ask yourself, “Am I still as gluttonous as I was before practicing Chan sitting? Am I still as materialistic as before? Have I corrected my improper habits and shortcomings? If I meet with unreasonable circumstances or matters that go against my wishes, do thoughts of affliction still arise?” If the answers are “yes”, then I can tell you that you have not progressed much from sitting in Chan. If you can reduce past bad habits and shortcomings, then you have some good news in your cultivation skill. You can examine yourself as follows:
1) Let us take a look at eating, for instance. If you could eat both tasty and non-tasty food with the same state of mind, then you would have chased away the greedy ghost.
2) Performing tasks: Is it the case that we will do anything that is beneficial to us and that we will not do anything that does not benefit ourselves? Are we very lazy, always seeking ease and comfort? If so, our skill in Chan samadhi has not improved. If you could change and be willing to do whatever might benefit others, and focus on being of service to the multitudes while not paying attention to your own personal matters, then you could get rid of the lazy ghost. If you could become more energetic day by day and were not always in a daze, then you could chase away the sleepy ghost. If you can chase away the greedy ghost, lazy ghost and sleepy ghost, then you gain preliminary skill in Chan meditation.
In this way, your spirit and temperament will definitely be quite different from the past and you will undergo a great change in personality. As the saying goes, “In the same temple but a different god”. It can also be said “In the same temple but a different ghost”. In the past, you were a ghost king, but now you are a Bodhisattva. Perhaps, you had an evil heart in the past but now you have the heart of a Bodhisattva.