Bhagavad Gita on Self-Discipline

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 6.17

युक्ताहारविहारस्य युक्तचेष्टस्य कर्मसु।

Yoga becomes the destroyer of pain for him who is moderate in eating and recreation (such as walking, etc.), who exercises moderation in action, and who is moderate in sleep and wakefulness.

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 17.3

सत्त्वानुरूपा सर्वस्य श्रद्धा भवति भारत।श्रद्धामयोऽयं पुरुषो यो यच्छ्रद्धः स एव सः

The faith of each is in accordance with their nature, O Arjuna. People consist of their faith; as a person's faith is, so are they.

BG 18.5

यज्ञदानतपःकर्म न त्याज्यं कार्यमेव तत्।यज्ञो दानं तपश्चैव पावनानि मनीषिणाम्

Acts of sacrifice, gift, and austerity should not be abandoned, but should be performed; for sacrifice, gift, and austerity are the purifiers of the wise.