The Yoga of Action

After teaching you to work with your nature (3.33), Krishna reveals the real enemies within that nature. The senses automatically develop rāga (attraction) and dveṣa (aversion) toward their objects—pleasant tastes, harsh sounds, comfortable situations, difficult tasks. This isn't wrong; it's vyavasthitau—built into how senses work. The danger comes when you let them control you. 'Tayor na vaśam āgacchet'—don't come under their power. These two are paripanthinau—your enemies disguised as preferences.