Bhagavad Gita on Mind Control

BG 6.5

उद्धरेदात्मनाऽऽत्मानं नात्मानमवसादयेत्।

One should raise oneself by one's own self alone; let not one lower oneself; for the self alone is one's own friend, and the self alone is one's own enemy.

BG 6.6

बन्धुरात्माऽऽत्मनस्तस्य येनात्मैवात्मना जितः।

The Self is the friend of the self of him by whom the Self has been conquered; but to the unconquered self, this Self stands in the position of an enemy, like an external foe.

BG 6.26

यतो यतो निश्चरति मनश्चञ्चलमस्थिरम्।

From whatever cause the restless and unsteady mind wanders away, let him restrain it from that and bring it under the control of the Self alone.

BG 6.35

श्री भगवानुवाच

The Blessed Lord said, "Undoubtedly, O mighty-armed Arjuna, the mind is difficult to control and restless; but with practice and dispassion, it can be restrained."

BG 2.56

दुःखेष्वनुद्विग्नमनाः सुखेषु विगतस्पृहः।

He whose mind is not shaken by adversity, who does not long for pleasures, and is free from attachment, fear, and anger, is called a sage of steady wisdom.

BG 2.60

यततो ह्यपि कौन्तेय पुरुषस्य विपश्चितः।

The turbulent senses, O Arjuna, can violently carry away the mind of a wise person, even though they are striving to control them.