The First Fundamental Siddhi of the Integral Yoga :

The process of the self-consecration undertaken through an ever-increasing concentration on the Divine through the thought, the will and the heart, eventually brings the seeker to the point where the Divine fills his life and his focus to such a degree, that nothing else intervenes.

The “something else” referred to here represents the ego-consciousness and its attempts to acquire the objects of its desire. The process must eventual lead to the extirpation of the force of desire through a perfect self-surrender of the ego-consciousness to the Divine.

Sri Aurobindo explains that in fact, the true transformation of consciousness comes about when the seeker recognises that there is nothing else other than the Divine!

“The effective fullness of our concentration on the one thing needful to the exclusion of all else will be the measure of our self-consecration to the One who is alone desirable.
But this exclusiveness will in the end exclude nothing except the falsehood of our way of seeing the world and our will’s ignorance. For our concentration on the Eternal will be consummated by the mind when we see constantly the Divine in itself and the Divine in ourselves, but also the Divine in all things and beings and happenings.
It will be consummated by the heart when all emotion is summed up in the love of the Divine,–of the Divine in itself and for itself, but love too of the Divine in all its beings and powers and personalities and forms in the Universe. It will be consummated by the will when we feel and receive always the divine impulsion and accept that alone as our sole motive force; but this will mean that, having slain to the last rebellious straggler the wandering impulses of the egoistic nature, we have universalised ourselves and can accept with a constant happy acceptance the one divine working in all things.”

Sri Aurobindo