Sri Krishna says that an individual having repeatedly reached the Asuric environments, life after life, fails to realize the Infinite Self. They never climb higher in their culture and sink to the bottom most level in their evolution and thus complete their fall.

The Lord advises how even the one who has fallen so hopelessly can improve his spiritual evolution. He says that there are three gateways to hell viz. desire, anger and greed. These characteristics are corollary to each other. He emphasizes that these three evils must be abandoned if one wants to rise up in the ladder of spirituality.
The Lord says that the one who has abandoned these three gateways to darkness will steadily progress towards the life’s goal. He will be practicing what is good for him; good in the sense that which not only brings happiness to the practitioner but also contributes much to the well being of the others around him. Progressing thus in the right direction such an individual goes to the Supreme, reaches the goal of life.

SCRIPTURES, THE CANON FOR DUTY

The commentary on this verse and the rest, is avaialble for free as:
Kindle eBook
Google Play Book
Apple Books

O son of Kunti, narah, a person; who is vimuktah, free; etaih, from these; tribhih, three; tamo-dvaraih, doors to darkness, i. e., passion etc. which are doors to the darkness of hell consisting of sorrow and delusion; freed from three three which are such, acarati, strives for;-for what?- sreyah, the good; atmanah, of the soul: debarred by which (doors) he could not strive earlier, and on the dispelling of which he strives. Tatah, thereby, as a result of that striving; yati, he attains; the param, suprme; gatim, Goal, i. e. Liberation, as well. [Not only does he attain Liberation by renouncing the demoniacal qualities, but he also secures happiness in this world.] The scripture is instrumental in this complete renunciation of the demoniacal qualities and striving for what is good. Both can be undertaken on the authority of the scriptures, not otherwise. Hence,