In the beginning he [Arjuna] was not in agreement with Krsna. He made so many arguments with Krsna against fighting. And at the end, he agreed. "Yes," he said. He became a yes man. So we have to become a yes man to the Supreme Lord. That's all. That is the perfection of our spiritual life. Now we are all "no men." God says this, I say "no." Stubborn. I say, "no." Now simply we have to say "yes". That's all. In everything we say, "no" at the present. Present formation of our existence is to say "no." Anything godly, we say "no." We shudder even by the name of God. We have come to a certain stage of our civilized life, that we want to banish God altogether. Not only saying "no," but we now prepare to agree to the point that there is no existence of God. So how much foolish we are becoming day by day in the name of advancement of civilization.

So we should correct this. Now, we shall try to understand our position and try to say "Yes, there is God, and I am servant of God." That's all. …Simply we have to agree. "Yes." Yes man. Simply you have to agree, "Yes," henceforward we shall become karma-yogi. Then, from that very point, your life begins. Karma-yoga. The yes man. Mind that, that instead of saying no to Krsna… Just like Arjuna said no in the beginning: "No, sir. I am not going to fight. You don't try to induce me, my dear Krsna." He argued so many things with Krsna. Then, at the last moment, he said, "Yes. I shall fight." So from "no man" to "yes man," that's all. So we have to agree. We are now "no men." We say everything about God, "no." Now we have to learn "yes."

>>> Ref. VedaBase => Bhagavad-gita 3.13-16 — New York, May 23, 1966