Krsna tells Arjuna that he should act in yoga. And what is that yoga? Yoga means to concentrate the mind upon the Supreme by controlling the ever-disturbing senses. And who is the Supreme? The Supreme is the Lord. And because He Himself is telling Arjuna to fight, Arjuna has nothing to do with the results of the fight. Gain or victory are Krsna's concern; Arjuna is simply advised to act according to the dictation of Krsna. The following of Krsna's dictation is real yoga, and this is practiced in the process called Krsna consciousness. By Krsna consciousness only can one give up the sense of proprietorship. One has to become the servant of Krsna, or the servant of the servant of Krsna. That is the right way to discharge duty in Krsna consciousness, which alone can help one to act in yoga.