This verse is from the Bhagavad Gita, Chapter 6, Verse 17. It is written in Sanskrit and translates to English as follows:
yuktāhāra-vihārasya yukta-cheṣhṭasya karmasu
yukta-svapnāvabodhasya yogo bhavati duḥkha-hā || 17 ||
"For one who is temperate in eating and recreation, balanced in work, and regulated in sleep and wakefulness, Yoga becomes the destroyer of sorrow."
In essence, this verse emphasizes the importance of balance and moderation in various aspects of life—diet, activity, work, sleep, and wakefulness—as essential to achieving the full benefits of Yoga, which leads to the alleviation of sorrow and suffering.
yukta: balanced, moderate, regulated
āhāra: eating, food
vihārasya: recreation, activities
yukta-cheṣhṭasya: balanced in actions
karmasu: in work, duties
yukta-svapna-avabodhasya: regulated in sleep and wakefulness
yogaḥ: yoga, discipline
bhavati: becomes, leads to
duḥkha-hā: destroyer of sorrow