BG Chap 8 - Remembering Kṛṣṇa constantly
Kṛṣṇa asks Arjuna to remember Him at all times and fight. When one offers one’s mind and intelligence to Kṛṣṇa, one would without doubt attain Him. Even though it may be difficult to remember Kṛṣṇa while we work, it will be far more difficult to remember Him at the time of death when our consciousness is disturbed and overwhelmed with pain. Therefore, Kṛṣṇa wants us to practice now. We should remember Kṛṣṇa (mām anusmara) in devotion and work for His pleasure (yudhya ca).
Continuously contemplating Kṛṣṇa, with mind engaged in repeated remembrance without deviation, one attains the Supreme Person. With consciousness unswerving, fixed on one point, contemplating the supreme person, Nārāyaṇa, endowed with great beauty, a person attains Nārāyaṇa. Just as a grassworm confined in a hole of a wall by a bee, always thinks of the bee in fear and later becomes a bee simply because of such remembrance, one who thinks of the Lord always, develops qualities like the Lord. Remembering the Lord by the mind is the highest yoga. By this practice of repeatedly remembering the Lord, one can conquer the mind. We can conquer our conditioned natures of different strengths, weaknesses, attachments and misgivings, by Kṛṣṇa’s mercy, thru always remembering Him.