Uddhared Atmanatmanamउद्धरेदात्मनात्मानम्

Bhagavad Gita 6.5 teaches a devotional principle from Krishna’s dialogue with Arjuna.

Bhagavad Gita 6.5
उद्धरेदात्मनात्मानं नात्मानमवसादयेत् । आत्मैव ह्यात्मनो बन्धुरात्मैव रिपुरात्मनः ॥
भावार्थ
मनुष्य को अपने मन से अपना उत्थान करना चाहिए, पतन नहीं। मन ही आत्मा का मित्र है और मन ही उसका शत्रु है।
Meaning
Lift yourself by your own self; do not lower yourself. The self can be its own friend and its own enemy.

Source: Bhagavad Gita 6 Sanskrit checked against SanskritDocuments: https://www.sanskritdocuments.org/doc_giitaa/bhagvadnew.html ; meanings checked against IIT Kanpur Gita Supersite and Vedabase chapter 6: https://www.gitasupersite.iitk.ac.in/srimad?field_chapter_value=6&field_nsutra_value=5&language=dv ; https://vedabase.io/en/library/bg/6/