The second chapter of the Bhagavad Gita is Sankhya Yoga. This is the most important chapter of the Bhagavad Gita as Lord Krishna condenses the teachings of the entire Gita in this chapter. This chapter is the essence of the entire Gita. Sankhya Yoga can be categorized into 4 main topics - 1. Arjuna completely surrenders himself to Lord Krishna and accepts his position as a disciple and Krishna as his Guru. He requests Krishna to guide him on how to dismiss his sorrow. 2. Explanation of the main cause of all grief, which is ignorance of the true nature of Self. 3. Karma Yoga - the discipline of selfless action without being attached to its fruits. 4. Description of a Perfect Man - One whose mind is steady and one-pointed.
Therefore, O mighty-armed one, his wisdom becomes established whose organs in all their varieties are withdrawn from their objects.OPEN VERSE
The self-restrained man keeps awake during that which is night for all creatures. That during which creatures keep awake, it is night to the seeing sage.OPEN VERSE
That man attains peace into whom all desires enter in the same way as the waters flow into a sea that remains unchanged (even) when being filled up from all sides. Not so one who is desirous of objects.OPEN VERSE
That man attains peace who, after rejecting all desires, moves about free from hankering, without the idea of ('me' and) 'mine', and devoid of pride.OPEN VERSE
O Partha, this is the state of being established in Brahman. One does not become deluded after attaining this. One attains identification with Brahman by being established in this state even in the closing years of one's life.OPEN VERSE