Once the physical seat is ready, the mental work begins. Kṛṣṇa tells the yogī to sit on the seat and practice yoga for the purpose of ‘ātma-viśuddhaye’, the purification of the heart. The primary technique is to make the mind ‘ekāgram’, or one-pointed. This requires controlling the activities of the mind and the senses. Most people’s minds are like monkeys, jumping from one thought to another. The yogī trains the mind to stay on one point—the Divine. They stop the ‘leakage’ of mental energy toward external objects and focus it like a laser beam on the internal self. The goal is not to gain superpowers, but to wash the soul of its material stains. Every moment of one-pointed focus is a moment of deep cleansing. Kṛṣṇa is showing Arjuna that the ultimate ‘work’ is this internal refinement, which can only be done when the mind is brought into a state of perfect discipline.