When you are practicing zazen, do not try to stop your thinking. Let it stop by itself. If something comes into your mind, let it come in, and let it go out. It will not stay long.

When you try to stop your thinking, it means you are bothered by it. Do not be bothered by anything. It appears as if something comes from outside your mind, but actually it is only the waves of your mind, and if you are not bothered by the waves, gradually they will become calmer and calmer. In five or at most ten minutes, your mind will be completely serene and calm.

Shunryu Suzuki (1904 CE-1971 CE), Shunryu Suzuki, often called Suzuki Roshi; was a Sōtō Zen monk and teacher who helped popularize Zen Buddhism in the United States, and is renowned for founding the first Zen Buddhist monastery outside Asia. Suzuki founded San Francisco Zen Center which, along with its affiliate temples, comprises one of the most influential Zen organizations in the United States.