tasmad bhavadbhih kartavyam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Therefore, my dear friends, O sons of the demons, your duty is to take to Krsna consciousness, which can burn the seed of fruitive activities artificially created by the modes of material nature and stop the flow of the intelligence in wakefulness, dreaming and deep sleep. In other words, when one takes to Krsna consciousness, his ignorance is immediately dissipated.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
This is confirmed in Bhagavad-gita (14.26):
mam ca yo ’vyabhicarena
sa gunan samatityaitan
“One who engages in full devotional service, who does not fall down in any circumstance, at once transcends the modes of material nature and thus comes to the level of Brahman.” By the practice of bhakti-yoga, one immediately comes to the spiritual platform, transcendental to the actions and reactions of the three modes of material nature. The root of ignorance is material consciousness, which must be killed by spiritual consciousness, or Krsna consciousness. The word bija-nirharanam refers to burning the root cause of material life to ashes. In the Medini dictionary, yoga is explained by its result: yoge ’purvartha-sampraptau sangati-dhyana-yuktisu. When one is put into an awkward position because of ignorance, the process by which one can be freed from this entanglement is called yoga. This is also called liberation. Muktir hitvanyatha-rupam svarupena vyavasthitih. Mukti means giving up one’s position in ignorance or illusion, by which one thinks in a way contrary to his constitutional position. Returning to one’s constitutional position is called mukti, and the process by which one does this is called yoga. Thus yoga is above karma, jñana and sankhya. Indeed, yoga is the ultimate goal of life. Krsna therefore advised Arjuna to become a yogi (tasmad yogi bhavarjuna). Lord Krsna further advised in Bhagavad-gita that the first-class yogi is he who has come to the platform of devotional service.
yoginam api sarvesam
sraddhavan bhajate yo mam
sa me yuktatamo matah
“Of all yogis, he who always abides in Me with great faith, worshiping Me in transcendental loving service, is most intimately united with Me in yoga and is the highest of all.” (Bg. 6.47) Thus one who always thinks of Krsna within the core of his heart is the best yogi. By practicing this best of all yoga systems, one is liberated from the material condition.