The mind has these four levels: physical, vital, buddhi, higher mind. The Supermind is far above these.
Sri AurobindoThe supramental transformation, the supramental evolution must carry with it a lifting of mind, life and body out of themselves into a greater way of being in which yet their own ways and powers would be, not suppressed or abolished, but perfected and fulfilled by the self-exceeding.
Sri AurobindoWhat comes from outside, one mistakes it as coming from inside. So many thoughts etc. move about outside in the universal - these manifest inside you. All these you must push away as foreign to you and the inside must be made peaceful, calm and quiet; then it will start descending from above.
Sri Aurobindo