The New Dawn #18 Beware of the mind: it is blind

Question 1
BELOVED OSHO,
DO I HAVE TO KNOW AND UNDERSTAND THE ROOTS OF MY OLD PATTERNS IN ORDER TO BE ABLE TO DROP THEM, OR IS AWARENESS ENOUGH? PLEASE COMMENT..

Question 2
BELOVED OSHO,
AT THE END OF THE MEDITATIONS I SOMETIMES REACH A QUIET, EXPANDING SPACE INSIDE ME. IT IS LIKE A FEELING OF VASTNESS AND IT RELAXES ME VERY MUCH. THEN, AFTER SOME TIME I GET TENSE AND AFRAID AND THE VASTNESS REACHES A BARRIER AND DISAPPEARS. EACH TIME, THE SILENCE DURING THIS EXPERIENCE HAS SOMETHING UNBEARABLE IN IT. BELOVED OSHO, WHAT IS THE BARRIER THAT I ENCOUNTER?