According to Osho, the witness is a silent, thought-free awareness that simply reflects whatever is, with no inner comment or sense of 'I am witnessing.' The 'thought of the witness' is a mental label that reengages the mind, creating ripples and identification. Witnessing and thinking cannot coexist; pure witnessing is a state of no-mind, effortless, nonjudgmental presence.
Just look without saying anything inside; the moment you think “I am watching,” it’s no longer real watching.