For a full day and two nights I have been alone. I lay on the beach under the stars at night alone....Beauty of earth and sear and air meant more to me. I was in harmony it, melted into the universe, lost in it, as one is lost in a canticle of praise, swelling from an unknown crowd in a cathedral. I felt closer to humankind, too, even in my solitude. For it is not physical solitude that separate us from others, not physical isolation, but spiritual isolation.
Sit in meditation, but do not think. Look only at your mind. You will see thoughts coming into it. Before they can enter, throw these away from your mind until your mind is capable of entire silence.