Prahlāda Mahārāja says, na tathā vindate kṣemam. Kṣemam means auspicity. The highest auspicity of life is to reconnect his lost relationship with the Supreme Personality of Godhead, or Kṛṣṇa. This is called yoga. Real yoga means this, that we are, at the present moment we have lost our consciousness. Not actually we have lost our consciousness; we have lost our memory.
Consciousness is there, but consciousness may be differently contaminated. Different person, your consciousness may be different from my consciousness. You are thinking in a different way, I am thinking in different way. Similarly, consciousness is there. That is a symptom of life, symptom of spirit soul. But the difference is due to material contamination.
Just like superficially your blood and my blood, the same, red. But if we analyze, oh, there may be so many chemicals present in your blood, and so many chemicals may be present which is not exactly equal. Similarly, as soon as there is life and there is spirit soul, the focus of the spirit soul, consciousness, must be there. I am present in this body—how I can understand? Because this consciousness. You pinch any part of your body, you feel. This is your consciousness. That means I am present in this body. And as soon as I am away from this body, you may cut this body into pieces—there will be no consciousness; there is no feeling.
So our consciousness should be purified. Now the consciousness is contaminated by material association in so many ways. Just like the blood purification tonic is given. If the doctor finds by examination of the blood . . . in your country, as soon as you go to a doctor, immediately, "Please offer your blood." The demand is immediately blood. That is, of course, scientific, modern science. But according to Āyurvedic system, there is no demand of blood. They feel the pulse, and according to the different, I mean to say, movement of the pulse, they can understand what kind of disease is there. All right, that is a medical science.
So anyway, Prahlāda Mahārāja says, na tathā vindate kṣemaṁ: "Instead of wasting your time for increasing the standard of sense gratification, the best thing will be to apply your energy for reviving your original Kṛṣṇa consciousness." Na tathā vindate kṣemaṁ mukunda-caraṇāmbujam. Na tathā vindate kṣemaṁ mukunda-caraṇāmbujam. Tat-prayāso kartavyo: "That endeavor should be done by which your time is not wasted, but you can revive, you can purify your consciousness, you can revive yourself to your original position, and that is your highest gain."