It is just the way to get familiar with letting the mind stay with ease and calmness. When we close our eyes and try to meditate, we may think we are coming into a “formal” situation, which will cause tension of our mind and body. When you feel you are in this “trap”, you should take a deep breath, relax the whole body and tell yourself “what I should do is just breathe and sit normally, the only difference is to keep a clear mind”. The Zen is about letting “formal” become “normal”.
Closing your eyes is not to be blind, but to ‘see’ more clearly.
The Zen will help us to learn not to fight our resistance to focus or concentrate. When we are doing the sitting or walking meditation, it is normal that our focus is disrupted by our wandering mind. The wandering is an old habit of our mind; it will take time to cultivate a new habit of concentration. When we are trying to resist the wandering, there will be more resistance back and this resistance clouds the mind. The conflict will cause more chaos, just like the stirring water cannot reflect your face clearly. The wandering mind is like the wind coming and it will fade away sooner or later. We should just keep a clear mind on the wandering and tell ourselves “my mind is wandering away from the focus” (belly’s up and down or steps you are taking). You will see how the wandering fades away, and recovers back to the focus again. The wandering itself is not important, but the awareness of the wandering and letting it be is important.
Everything is contained inside the moment of breathing, don’t tend to separate the breathing from anything else. It is all one.