Bhagavad Gita Verses on Happiness & Contentment

बाह्यस्पर्शेष्वसक्तात्मा विन्दत्यात्मनि यत्सुखम्। स ब्रह्मयोगयुक्तात्मा सुखमक्षयमश्नुते॥

With the self unattached to external contacts, he finds happiness in the Self; with the self engaged in the meditation of Brahman, he attains endless happiness.

सुखमात्यन्तिकं यत्तद्बुद्धिग्राह्यमतीन्द्रियम्। वेत्ति यत्र न चैवायं स्थितश्चलति तत्त्वतः॥

When he (the Yogi) feels that infinite bliss which can be grasped by the pure intellect and which transcends the senses, and is established therein, never moving away from the reality.

प्रशान्तमनसं ह्येनं योगिनं सुखमुत्तमम्। उपैति शान्तरजसं ब्रह्मभूतमकल्मषम्॥

Supreme Bliss indeed comes to this Yogi whose mind is made peaceful, whose passion is quelled, who has become Brahman, and who is free from sin.

यत्तदग्रे विषमिव परिणामेऽमृतोपमम्।तत्सुखं सात्त्विकं प्रोक्तमात्मबुद्धिप्रसादजम्॥

That which is like poison at first but in the end like nectar—that happiness is declared to be sattvic, born of the purity of one's own mind due to self-realization.