Osho Entering Sleep Consciously
The moment when you are dropping into sleep is the moment to encounter the unconscious. If you can remain out of sleep, then the unconscious will be revealed -- because that is the line. The very line from where you drop into sleep is the line where you can enter into the unconscious.
You can try this. You have been sleeping every day, but you have not encountered sleep yet. You have not seen it -- what it is, how it comes, how you drop into it. You have not known anything about it. You have been dropping into it daily, coming out of it, but you have not felt the moment when sleep comes on the mind -- what happens.
So try this, and with three months' effort, suddenly, one day, you will enter sleep knowingly: drop on your bed, close your eyes, and then remember, remember that sleep is coming and "I am to remain awake when the sleep comes."
It is very arduous, but it helps. One day it will not happen, another day it will not happen. Persist every day, constantly remembering that sleep is coming, and "I am not to allow it without nowing. I must be aware when sleep enters. I must go on feeling how sleep takes over, what it is."
And One day sleep is there, and you are still awake. That very moment you become aware of your unconsciousness. And once you become aware of your unconsciousness you will never be asleep again during the day. Sleep will be there, but you will be awake simultaneously. A center in you will go on knowing; all around will be sleep, and the center will go on knowing. When this center is knowing, dreams become impossible. Then you are asleep in a different sense, and you will be awake in the morning in a different sense. A different quality comes by the encounter.
-Osho, "The Ultimate Alchemy, Vol 1, #6, Q1"