Into all our endeavour upward the lower element of desire will at first naturally enter. For what the enlightened will sees as the thing to be done and pursues as the crown to be conquered, what the heart embraces as the one thing delightful, that in us which feels itself limited and opposed and, because it is limited, craves and struggles, will seek with the troubled passion of an egoistic desire. This craving life-force or desire-soul in us has to be accepted at first, but only in order that it may be transformed. Even from the very beginning it has to be taught to renounce all other desires and concentrate itself on the passion for the Divine. This capital point gained, it has to be taught to desire, not for its own separate sake, but for God in the world and for the Divine in ourselves; it has to fix itself upon no personal spiritual gain, though of all possible spiritual gains we are sure, but on the great work to be done in us and others, on the high coming manifestation which is to be the glorious fulfilment of the Divine in the world, on the Truth that has to be sought and lived and enthroned for ever. But last, most difficult for it, more difficult than to seek with the right object, it has to be taught to seek in the right manner; for it must learn to desire, not in its own egoistic way, but in the way of the Divine. It must insist no longer, as the strong separative will always insists, on its own manner of fulfilment, its own dream of possession, its own idea of the right and the desirable; it must yearn to fulfil a larger and greater Will and consent to wait upon a less interested and ignorant guidance. Thus trained, Desire, that great unquiet harasser and troubler of man and cause of every kind of stumbling, will become fit to be transformed into its divine counterpart. For desire and passion too have their divine forms; there is a pure ecstasy of the soul’s seeking beyond all craving and grief, there is a Will of Ananda that sits glorified in the possession of the supreme beatitudes.
Ref : Synthesis of Yoga