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.
External situations cannot force you to give up Bhakti. External situations can force you to give up specific actions of Bhakti. But the essence of Bhakti is fixity of mind on Krishna. Only an offense can trigger you to give up Bhakti. But then you will come back to Bhakti anyway once the offense has given its result.
