DIRECT YOUR THOUGHTS TO THE DIVINE
Kṛṣṇa, or any Enlightened Master or Incarnation, only asks us to keep our inner space completely free of desires.
Our thoughts are generally related to greed and fear. We keep piling up desires because our root thought patterns are of greed and fear. When we die, our soul re-experiences these desires. Attachment to these desires makes our death painful. An Enlightened Master has seen this process and speaks from experience.
He is pure compassion and He wants everyone to know the secret of mastering the art of leaving.
That is why Kṛṣṇa says again and again: When we direct our thoughts to the Divine, greed and fear are completely wiped out. Our whole being is filled with gratitude to the Divine.
One more thing, many people think of God because they want to go to heaven. Some people are afraid of death so they think of God. Both are only because of greed or fear. When we think of the Divine, we should do so out of gratitude, and not out of greed or fear. Our thoughts about God, our devotion to the Divine should be out of pure gratitude to Existence.