My heart is weighed down with the vice of faintness; my mind is confused as to duty. I ask thee which may be the better—that tell me decisively. I am thy disciple, suppliant to Thee; teach me.
In plain words: Arjuna admits that weakness has taken over his heart and that he is confused about his duty. He asks Krishna to tell him clearly what is best, saying he is now Krishna's student and begs to be taught.