Every man is in difficulty in so many ways, as Arjuna was also in difficulty in having to fight the Battle of Kuruksetra. Arjuna surrendered unto Lord Krsna, and consequently this Bhagavad-gita was spoken. Not only Arjuna, but every one of us is full of anxieties because of this material existence. Our very existence is in the atmosphere of nonexistence. Actually we are not meant to be threatened by nonexistence. Our existence is eternal…

From Srila Prabhupada’s introduction to the Bhagavad-gita As It Is