Note Sloka 54 and Sloka 55 are in the same video. Forward about half way to listen to Sloka 55.
श्री भगवानुवाच
प्रजहाति यदा कामान् सर्वान् पार्थ मनोगतान्।
आत्मन्येवात्मना तुष्टः स्थितप्रज्ञस्तदोच्यते।।
śrī-bhagavān uvāca
prajahāti yadā kāmān
sarvān pārtha mano-gatān
ātmany evātmanā tuṣṭaḥ
sthita-prajñas tadocyate