The true inner soul may find various standpoints and realisations in any particular lifetime. While the ultimate “mission” of the soul, if you will, is to divinise the individual life and its relationship to the world, there are certainly other options available to the soul as it works through the issues and concerns and possibilities of a particular lifetime.
The soul can be brought into the front to lead the mind, life and body and spiritualise the personality. It may rest content to frame a particular realisation of a life expressive of Knowledge, Truth, Beauty, Love, Harmony, without necessarily taking things to the ultimate and complete realisations that are possible.
It may choose to abandon the life in the world and seek an inner spiritual Oneness or realisation without transforming the life in the body and the life in the world.
It can become one with the vast Silence and the Universal Existent through a deep meditation; or it may choose to immerse itself in the infinite Love of the divine Bliss that creates all existence, and lose itself in that ineffable deep experience of divine Love.
It may even choose to accept apparent dissolution into the transcendent and not give the life in the world any significance or attention at all.
All of these various standpoints and realisations in fact are adopted by souls at some stage or another of their evolutionary growth process from life to life.
There are however other and more comprehensive realisations possible where the mind, life and body are actually taken up and transformed to create the conscious and integral experience of a divine Life in a divine Body, which appears to be the ultimate goal toward which the soul is actually striving.
reference: Sri Aurobindo, The Life Divine, Chapter 23, The Double Soul In Man