So here again is Krishna warning. But in any Yoga practice that cannot ask you to indulge in the service of Krishna, do not indulge in other Yoga practices. Krishna has mentioned many ways so you will contemplate on the sense objects & you could be deceived. You will not be able to even know higher taste.

            So here, Krishna is telling the one who does not give him and his service – instead, does not want to engage in my service. He would have no fixed intelligence because he will never get higher happiness in life, then in his life no one could calculate. Now, his intelligence changes, ‘let me crack this exam as well.’ Then intelligence shifts, ‘allowed me to do this job.’ Then intelligence changes. I should do some other business or some other job. Then let me marry this person.” Let me divorce this person. Let me do this.  Their mind is not full all the time with the question, “What will make me happy?” Awareness is the first and foremost step to stop this disturbance in life. Because nothing satisfies the spirit and soul than Krishna consciousness. So here Krishna is explaining: if you don’t render service to my services, then what will occur? If you don’t make a deliberate decision to change, intelligence will not be updated, and intelligence controls the mind. We can have control over the mind by controlled intelligence, when the intelligence is controlled, not fixed, then the mind will be disturbed. The mind will have this plan, that plan, this idea, that idea; the mind will always be disturbed. If the mind is fixed on happiness, there is peace (Shanti), and vice versa. There is disturbance. And if there is no peace in life, then where is the question of happiness? So Krishna also explained that time is very less; his birth is near. Krishna delivered this Bhagavad Gita at the end of Dwapar Yoga, upper Yoga, just before the commencement of Kaliyuga. He meant to emphasize the importance of stress. One of such very important methods in Kaliyuga. Anyway, people will be in a very much disturbed state. Hence, avoid the gradual process of Yoga, save time, and understand this topmost Yoga, Buddhi Yoga. People ask, use my service in your senses, and I will accept the results. Attempt to foster a loving relationship with me. Ashtanga Yoga, the Yoga we were taught, is for Satyuga; don’t follow this artificial Yoga. It is mentioned somewhere with respect to Satyuga / Kaliyuga: the Vedas are telling it is for Satyuga, nowhere in the Vedas is it mentioned that you follow this practice in Kaliyuga and you will gain success. So, for meditation, they want to do it artificially, like a yogi. They first want to get rid of all those distractions, they want to stop all those activities of the senses, then they want to start contemplation, and then they want to come to meditation, and then they want to reach samadhi. They keep artificially focusing on the form of Krishna, but the very natural way of focusing is the service of Krishna. One does have a lovely relationship when they serve anybody, and when there is love, we are always thinking only about our object of love. So, Krishna here recommends that you please engage in my service, this is the natural process of Yoga. Use whatever little means you have to the best of your ability, and when there is service, there is love, and when there is love, you’re liking for me will only grow, then you will always think of me. Without the prescribed austerities for the sages of old, realization comes effortlessly; it is the process of Yoga that is naturally achieved.

Thus, as Krishna explains, if you do not get involved, intelligence is not absolute. The mind is not fixed. Unhappiness then enters life. Without peace, there is no happiness.