That which then remains separate and alone by itself, that pure Awareness is what I am. This Awareness self is by its very nature Sat-Chit-Ananda, (Being-Consciousness-Bliss). ~ Sri Ramana Maharshi
The Self cannot be known through study of the scriptures, nor through the intellect, nor through hearing learned discourses. The Self can be attained only by those whom the Self chooses. Verily unto them does the Self reveal himself. (Katha Upanishad).
Everyone is the Self by his own experience. Still he is not aware, he identifies the Self with the body and feels miserable. This is the greatest of all mysteries. One is the Self. Why not abide as the Self and be done with miseries?