What are the activities that drive the soul to reincarnate?
In truth, it is activities aimed at sense gratification, whose sole purpose is to satisfy the mind and the senses, that are the cause of the spiritual being's bondage to matter and thus the imprisonment of the spiritual being in a material body. As long as the soul engages in these self-serving activities, it will continue to reincarnate from one species to another. However, let us know that the human form is rarely achieved.
The Supreme Eternal One answers: Man can enjoy the fruits of renunciation through simple self-control, detachment from worldly things, and disinterest in material pleasures. This, in fact, lies the highest perfection of renunciation.
If we want our actions to have no good and/or bad consequences, and for our karma to disappear, we must offer to God all the fruits of our actions, our existence, our life, and serve Him with love and devotion. Therein lies the perfection of existence.
Renunciation is distancing oneself from one's father, mother, brothers and sisters, wife, and children, in order to extend the love one has for them to the Supreme Lord on the one hand, and to all beings without exception on the other. It means renouncing one's social status, detaching oneself from all material possessions, and opting for total celibacy in order to love God, surrender to Him, and serve Him with love and devotion. This is perfect renunciation.
What does it mean to realize one's spiritual self?
To realize one's spiritual self is to know one's original and eternal position in relation to God, to know oneself to be an integral part of the Lord, and to know oneself to serve Him with love and devotion. Constant spiritual union with the Absolute through this service is called the perfection of existence.
What is it that drives man to sin, even against his will, as if compelled?
Upon contact with matter, the soul indulges without hesitation in all kinds of sinful activities, often against its will. It is compelled to commit sins without having desired them.
The Lord explains it in these words: It is lust alone. Born from contact with passion, then transformed into anger, it constitutes the devastating enemy of the world and the source of sin.