Witnessing is very powerful when the witnesser is lost. Whenever the no-mind or ego less state happens to coincide with witnessing – one may get a glimpse of inside ‘truth’ that liberates, then you are no more same person.
Kabir said that when outside and inside becomes one, then only you have achieved destiny as human being.
We know about the outside only. Inside is not even felt by many! How can one meet to whom you do not know? Only the inside can find you, there is no other way this is why it is beyond our control. Even if inside wishes to meet you in present moment, then you must be looking at it too, to be able to meet.
Osho advices to become watcher.
No-mind state makes you available in present moment, and witnessing lets you see yourself so that anything coming out can see you ‘watching’ at it. Simple.