उद्धरेदात्मनाऽऽत्मानं नात्मानमवसादयेत्। आत्मैव ह्यात्मनो बन्धुरात्मैव रिपुरात्मनः
uddhared ātmanātmānaṁ nātmānam avasādayet ātmaiva hyātmano bandhur ātmaiva ripur ātmanaḥ
Let him seek liberation with the help of his Highest Self, and never disgrace his own Self. For that Self is his only friend; yet it can also be his enemy.
Translated by Shri Purohit Swami
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.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
uddharet—elevate; ātmanā—through the mind; ātmānam—the self; na—not; ātmānam—the self; avasādayet—degrade; ātmā—the mind; eva—certainly; hi—indeed; ātmanaḥ—of the self; bandhuḥ—friend; ātmā—the mind; eva—certainly; ripuḥ—enemy; ātmanaḥ—of the self