Bhagavad Gita, 6.29

"Harmonizing the mind by the practice of yoga, one sees unity all around, seeing the Self in all beings, and all beings in the Self." 

सर्वभूतस्थमात्मानं सर्वभूतानि चात्मनि ।
ईक्षते योगयुक्तात्मा सर्वत्र समदर्शनः ॥ ६-२९॥

Śrīla Bhaktivedānta Nārāyaṇa Gosvāmī Mahārāja explains in the Sārārtha-varṣiṇī:

“Arjuna is asking, ‘What type of bliss comes from contact with brahma?’ Śrī Bhagavān anticipates this question and explains briefly that the yogī who has attained samādhi behaves in two ways: (1) according to his bhāva (mood) and (2) according to his activity. His bhāva is such that he sees Paramātmā in all jīvas and all jīvas in Paramātmā. His activities reflect such equal vision everywhere."

This is such a beautiful explanation of the verse. The yogi who has attained the highest levels of absorption and truth sees the highest Self in all beings, and all beings in the highest Self, and as such, acts in the world in ways that reflect this vision of unity. It is such a simple and elegant way of saying that there are two things: awareness and activity. When activity is in perfect alignment with awareness, then we are actualizing samadhi, or transcendent awareness. Samadhi does not need to be a passive state; if it doesn't carry over into day-to-day life, then we are not quite established in that state. We can have glimpses that encourage and inspire us to continue, and for most, that's good enough. But here, Krishna is saying, full, permanent contact with pure consciousness is constant samadhi, constant unity vision, in all conditions, at all times. If nothing else, it's a good reminder to every once in a while during the day, to try to imagine or practice equal vision, and see what happens.