Verse
उद्धरेदात्मनात्मानं नात्मानमवसादयेत् ।आत्मैव ह्यात्मनो बन्धुर् आत्मैव रिपुरात्मनः ॥
By the self thou shouldst deliver the self, thou shouldst not depress and cast down the self (whether by self-indulgence or suppression); for the self is the friend of the self and the self is the enemy.
Gītā 6·5