Patañjali’s Yoga Sūtras are the classical work of the Yoga School of thought, one of the Six Darśanas studied in the Bhakti Tirtha course. They focus on how to attain direct experience and realization of the puruṣa, or the individual self. As the classical treatise on the Vedic understanding of the mind and consciousness and on techniques of meditation and self-realization, it has exerted immense influence over the religious practices of Hinduism in India and, more recently, in the West. For Vaiṣṇavas, the Yoga Sūtras are especially helpful in understanding the first two chapters of Bhakti-rasāmṛita-sindhu.
Why are people taking drugs these days? Because there is no love or happiness in relations. The nature of the human mind is to always be looking for happiness. You can find happiness in only two ways – either a person becomes spiritual, or a person becomes an animal by dulling one’s awareness by consuming drugs and alcohol.