बाह्यस्पर्शेष्वसक्तात्मा विन्दत्यात्मनि यत्सुखम्।
स ब्रह्मयोगयुक्तात्मा सुखमक्षयमश्नुते।।5.21।।
5.21 With his heart unattached to external objects, he gets the bliss that is in the Self. With his heart absorbed in meditation on Brahman, he acires undecaying Bliss.
5.21 He who finds happiness in the self within himself, his mind detached from external contact in the manner already mentioned, i.e., from experience of objects other than the self - such a person abandoning the contemplation on Prakrti or bodily experiences, has his mind engaged in the contemplation on Brahman i.e., the Atman. Thus he attains everlasting bliss which consists in the experience of Brahman (the self). Sri Krsna speaks of the abandonment of material pleasure as easy:
Baahyasparsheshwasaktaatmaa vindatyaatmani yat sukham; Sa brahma yoga yuktaatmaa sukham akshayam ashnute.
bāhya-sparśheṣhu—external sense pleasure; asakta-ātmā—those who are unattached; vindati—find; ātmani—in the self; yat—which; sukham—bliss; saḥ—that person; brahma-yoga yukta-ātmā—those who are united with God through yog; sukham—happiness; akṣhayam—unlimited; aśhnute—experiences