Sri Aurobindo describes the requirements for the descent and manifestation of the supramental force, which alone has the power to transform mind, life and body.
“There must be a total and sincere surrender; there must be an exclusive self-opening to the divine Power; there must be a constant and integral choice of the Truth that is descending, a constant and integral rejection of the falsehood of the mental, vital and physical Powers and Appearances that still rule the earth-Nature.”
The ego here is the fulcrum. On one side resides the normal existence of body, life and mind, with its desires, its limitations, its incapacities, and its rigid mental idea structures. On the other side is the consciousness of Oneness, Universality and Harmony. As long as we remain rooted in the ego, we need to utilise the ego to make the right conscious choices, and thereby move away from the lower hemisphere of body, life and mind, and toward the higher hemisphere of existence, consciousness-force and bliss. Eventually the hold of the ego weakens and the higher Force can manifest in its fullness and puissance.
The surrender is the subordination of the ego to something larger and purer than itself. The self-opening to the Divine power implies a responsive acceptance of the higher Truth of Oneness. The connstant and integral choice of the truth that is descending means that we have to consistently and regularly act from that higher value system and viewpoint rather than allowing ourselves to return to the fragmented, limited and isolated normal human consciousness. The constant and integral rejection of the falsehood of the body, life and mind consciousness is the counterpart of the choice of the higher consciousness in all things and at all times.
Obviously this is a progressive process through Time. With our conscious participation and effort, we can attain a state where it is no longer a struggle, but a natural turning and opening, as the sunflower automatically seeks and responds to the rays of the sun.