Concentration comes not from trying hard to focus on something, but from keeping your mind open and directing it at nothing.
Shunryu SuzukiIt is not after we understand the truth that we attain enlightenment. To realize the truth is to live - to exist here and now.
Shunryu SuzukiSo for a period of time each day, try to sit, without moving, without expecting anything, as if you were in your last moment. Moment after moment you feel your last instant. In each inhalation and each exhalation there are countless instants of time. Your intention is to live in each instant.
Shunryu Suzuki