Watch what is happening inside you, do not think, but just watch, do not move your eye-balls, just keep them very, very quiet, because there is nothing to see now, you have seen all the things around you, now you are seeing what is happening inside your mind, and to see what is happening inside your mind, you have to be very quiet inside. And when you do this, do you know what happens to you? You become very sensitive, you become very alert to things outside and inside. Then you find out that the outside is the inside, then you find out that the observer is the observed.