"Meditation is rest, absolute rest, a full stop to all activity – physical, mental, emotional. When you are in such a deep rest that nothing stirs in you, when all action as such ceases, as if you are fast asleep yet awake, you come to know who you are. Suddenly the window opens. It cannot be opened by effort, because effort creates tension, and tension is the cause of our whole misery. Hence this is something very fundamental to be understood that meditation is not effort."
Osho (from The Golden Wind)