Introduction
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occupation he should remember Krṣṇa. If he doesn't practice remembering Krṣṇa while he is struggling for existence, then it will not be possible for him to remember Krṣṇa at the time of death. Lord Caitanya also advises this. He says that one should practice remembering the Lord by chanting the names of the Lord always. The names of the Lord and the Lord are nondifferent. So Lord Krṣṇa's instruction to Arjuna to "remember Me" and Lord Caitanya's injunction to always "chant the names of Lord Krṣṇa" are the same instruction. There is no difference, because Krṣṇa and Krṣṇa's name are nondifferent. In the absolute status there is no difference between reference and referent. Therefore we have to practice remembering the Lord always, twenty-four hours a day, by chanting His names and molding our life's activities in such a way that we can remember Him always.
How is this possible? The  ācāryas  give the following example. If a married woman is attached to another man, or if a man has an attachment for a woman other than his wife, then the attachment is to be considered very strong. One with such an attachment is always thinking of the loved one. The wife who is thinking of her lover is always thinking of meeting him, even while she is carrying out her household chores. In fact, she carries out her household work even more carefully so her husband will not suspect her attachment. Similarly, we should always remember the supreme lover, Śrī Kṛṣṇa, and at the same time perform our material duties very ricely. A strong sense of love is required here. If we have a strong sense of love for the Supreme Lord, then we can discharge our duty and at the same time remember Him. But we have to develop that sense of love. Arjuna, for instance, was always thinking of Kṛṣṇa; he was the constant companion of Kṛṣṇa, and at the same time he was a warrior. Kṛṣṇa did not advise him to give up fighting and go to the forest to meditate. When Lord Kṛṣṇa delineates the  yoga  system to Arjuna, Arjuna says that the practice of this system is not possible for him.
arjuna uvāca  
 yo ’yaṁ yogas tvayā proktaḥ sāmyena madhusūdana  
 etasyāhaṁ na paśyāmi cañcalatvāt sthitiṁ sthirām
“Arjuna said, O Madhusūdana, the system of  yoga  which you have summarized appears impractical and unendurable to me, for the mind is restless and unsteady.” (Bg. 6.33)
But the Lord says::
yoginām api sarveṣām mad-gatenāntarātmanā śraddhāvān bhajate yo māṁ sa me yuktatamo mataḥ