धृत्या यया धारयते मन:प्राणेन्द्रियक्रिया: |
योगेनाव्यभिचारिण्या धृति: सा पार्थ सात्त्विकी || 33||
BG 18.33: The steadfast will that is developed through Yog, and which sustains the activities of the mind, the life-airs, and the senses, is said to be determination in the mode of goodness.