In the Mahābhārata there is given the Bhagavad-gītā. Then all Vedic literature is summarized in the Vedānta-sūtra, and for future guidance he gave a natural commentation on the Vedānta-sūtra, called Śrīmad-Bhāgavatam. We must always engage our minds in reading these Vedic literatures. Just as materialists engage their minds in reading newspapers, magazines and so many materialistic literatures, we must transfer our reading to these literatures which are given to us by Vyāsadeva; in that way it will be possible for us to remember the Supreme Lord at the time of death. That is the only way suggested by the Lord, and He guarantees the result: "There is no doubt."
- tasmāt sarveṣu kāleṣu
- mām anusmara yudhya ca
- mayy arpita-mano-buddhir
- mām evaiṣyasy asaṁśayaḥ
"Therefore, Arjuna, you should always think of Me in the form of Kṛṣṇa and at the same time continue your prescribed duty of fighting. With your activities dedicated to Me and your mind and intelligence fixed on Me, you will attain Me without doubt." (BG 8.7)
He does not advise Arjuna simply to remember Him and give up his occupation. No, the Lord never suggests anything impractical.