Don't give energy to your thoughts. Become a witness — indifferent, aloof, distant. Just see the thoughts, and don't be in any way involved in them. Note the fact: the thoughts are there; but don't choose this way or that, don't be for or against, don't be pro or con. Just be a watcher. Let the mind-traffic move, just stand by the side and look at it, unaffected by it, as if it has nothing to do with you.
Sometimes try it: go on the busiest street where the traffic rush is too much. Stand by the side of the road and see the traffic — so many people going hither and thither, and cars and bicycles and trucks and buses. You just stand by the side and look, and do the same inside: close your eyes and see — the mind is a traffic of thoughts, thoughts rushing here and there. You watch, you just be a watcher. By and by, you will see that the traffic is becoming less and less. By and by, you will see that the road is empty, nobody is passing. In those rare moments, first glimpses of SAMADHI will enter in you.
There are three stages of SAMADHI. First, when you achieve glimpses through gaps — one thought comes, then it has gone and another has not come for the time being. There may even be a gap for a few seconds; in that interval reality penetrates you — the moon becomes one. The reflection is there only for a single moment, but you will see the first glimpse.
This is what in Zen they call SATORI. By and by, the gaps will become bigger, and when the gaps become bigger and you can see reality more clearly, that vision of reality changes you. Then you cannot be the same because your vision becomes your reality also. Whatsoever you are seeing affects your being. Your vision, by and by, is absorbed, digested. That is the second stage of samadhi.
And then comes the last stage: when suddenly the whole traffic disappears, as if you were fast asleep and dreaming and somebody has shaken you and awakened you, and the whole traffic of dreaming has stopped. In that third stage you become one with reality, because there is nothing to divide. The fence that was dividing you has disappeared. The wall is no more there. The wall is made of the bricks of thoughts, desires, feelings, emotions; once it disappears — it is a China wall, very ancient, and every strong — but once it disappears, there is no fence between you and God.
When for the first time the third stage happens, that is where the Upanishads announced, "AHAM BRAHAMASMI" — I am God, I am the Brahma. It is where the Sufi mystic, Mansur, declares, "ANAL HAQ" — I am the truth. It is there when Jesus declares, "I and my God are one, I and my Father are one."
OSHO