The Spiritual Import of the Mahabharata and the Bhagavadgita : Ch-12.17.

Chapter 12: The Entry of the Soul into the Supreme Being

Part-17.

So you will be suddenly taken like a rocket, as it were—a tremendous force, and the energy that drives that rocket is desire itself.

The rocket is your own subtle body, and you are driven to that place where you will fulfil your desire, either fully or partially, according to the intensity of the desire.

If the desire is intense—positive or negative—sometimes the fulfilment is seen in this very birth.

In this very life you can fulfil your desires, provided the desire is terrific, uncontrollable, immense and it has overwhelmed you and inundated you.

If the desire is so intense, whether it is virtuous or otherwise, you will see the consequence of it in this very birth.

But if it is not so strong, you will reap the fruit thereof later on, in some other plane of existence, some other kind of circumstance where the conditions will be favourable for the fructification of this desire.

Great souls, pious persons, devotees of God who have retained the concepts of the transcendenality of God, the other-worldliness of God in one sense, to put it more precisely, will reach God through the various stages of the ascent which are described in the scriptures such as the Upanishads and expounded in the Brahma Sutras, etc. They go from one light to another light, from dimmer light to brighter light, until the brightest light of the highest heaven is reached.

Swami Krishnananda
To be continued  ..