According to Osho, concentration is coercive and creates tension; fixing the mind on an idea, image, or word produces a hypnotic stupor, not thoughtlessness or awakening. Do not force the mind. Samadhi is not unconsciousness but the union of thoughtlessness and perfect consciousness, which cannot be reached through strained concentration.
Don’t force your mind to focus; true quiet is clear and awake, not drowsy or blank.