Kṛṣṇa defines ‘Austerity of the Mind’. It includes mental satisfaction, gentleness, gravity, self-control, and the purification of one’s feelings (‘Bhāva-saṁśuddhiḥ’). This is the internal work of spiritual life. It is about training the mind to be a pleasant, clean, and stable place to live. ‘Manaḥ-prasādaḥ’ means being happy by default. Usually, we wait for a reason to be happy. The yogī practices being satisfied with the self. ‘Maunam’ here means more than just not talking; it means the mind is silent of material cravings and full of ‘gravity’ (seriousness). Purifying our feelings means removing the ‘dirt’ of lust, envy, and anger from our emotional reactions. It teaches us that our internal mood is our own responsibility. We cannot blame others for our mental state. By practicing these mental austerities, we become the masters of our own happiness. We should strive to be ‘Saumyatvam’ (gentle) even in our private thoughts. A clean mind is the ultimate playground for the soul and the perfect seat for the Lord.