Bhagwat Gita 6:23-25

The practice of meditation frees one from all affliction. This is the path of yoga. Follow it with determination and sustained enthusiasm. Renouncing wholeheartedly all selfish desires and expectations, use your will to control the senses. Little by little, through patience and repeated effort, the mind will become stilled in the Self.

-Bhagavad Gita 6:23-25