Chapter 2 · The Yoga of Knowledge · Krishna said
Bhagavad Gita 2.65 — Peace ends sorrow
प्रसादे सर्वदुःखानां हानिरस्योपजायते। प्रसन्नचेतसो ह्याशु बुद्धिः पर्यवतिष्ठते ॥
prasāde sarvaduḥkhānāṃ hānirasyopajāyate | prasannacetaso hyāśu buddhiḥ paryavatiṣṭhate ||
Meaning
In that inner peace all sorrows come to an end, and the wisdom of one with a calm mind soon becomes steady.