Easiest way
Bhagavad-gita As It Is
BG Chapters 1 - 6
Intelligence is supposed to direct the mind, but the mind is so strong and obstinate that it often overcomes even one's own intelligence, as an acute infection may surpass the efficacy of medicine. Such a strong mind is supposed to be controlled by the practice of yoga, but such practice is never practical for a worldly person like Arjuna. And what can we say of modern man? The simile used here is appropriate: one cannot capture the blowing wind. And it is even more difficult to capture the turbulent mind. The easiest way to control the mind, as suggested by Lord Caitanya, is chanting "Hare Kṛṣṇa," the great mantra for deliverance, in all humility. The method prescribed is sa vai manaḥ kṛṣṇa-pādāravindayoḥ: (SB 9.4.18) one must engage one's mind fully in Kṛṣṇa. Only then will there remain no other engagements to agitate the mind.