Concentration comes not from trying hard to focus on something, but from keeping your mind open and directing it at nothing.
Shunryu SuzukiSo it is not a matter of whether it is possible to attain Buddhahood, or if it is possible to make a tile a jewel. But just to work, just to live in this world with this understanding is the most important point, and that is our practice. That is true zazen.
Shunryu SuzukiWhen he bowed to all those buddhas, the buddhas he bowed to were beyond his own understanding. Again and again he did it.
Shunryu Suzuki