The Yoga Sūtras teach that the movements of the mind are stilled by practice and dispassion. Abhyāsa is repeated effort toward steadiness, which becomes firmly grounded when pursued for a long time, without interruption and with devotion. The Bhagavad Gītā gives the same pair as the way to master the restless mind.
Abhyāsa
Practice: the steady effort to remain in stillness, paired in yoga with dispassion.
Also: Abhyasa, practice