Kṛṣṇa uses a classic and beautiful metaphor to describe the controlled mind. He compares the mind of a yogī in meditation to a candle flame in a ‘windless place’. Such a flame stands perfectly straight and does not flicker or waver. The ‘wind’ represents our material desires and sensory distractions. In an ordinary person, the mind is like a flame in a storm, flickering wildly and providing no steady light. But when the wind of desire is stopped through detachment, the flame of consciousness becomes steady and powerful. This unwavering focus allows the yogī to see the self clearly. Kṛṣṇa is showing Arjuna that the purpose of his training is to reach this state of mental stillness. If his mind is as steady as that windless flame, he will not be disturbed by the chaos of the war; he will see his duty with absolute, unwavering clarity.