Watch the mind and see where it is, what it is. You will feel thoughts floating and there will be intervals. And if you watch long, you will see that intervals are more than the thoughts, because each thought has to be separate from another thought; in fact, each word has to be separate from another word. The deeper you go, you will find more and more gaps, bigger and bigger gaps. A thought floats, then comes a gap where no thought exists; then another thought comes, another gap follows.
If you are unconscious you cannot see the gaps; you jump from one thought to another, you never see the gap. If you become aware you will see more and more gaps. If you become perfectly aware, then miles of gaps will be revealed to you. And in those gaps, satoris happen. In those gaps the truth knocks at your door.