Bhagavad Gita Chapter 18.33
dhṛtyā yayā dhārayate
manaḥ-prāṇendriya-kriyāḥ
yogenāvyabhicāriṇyā
dhṛtiḥ sā pārtha sāttvikī
Translation
O son of Pritha, that determination which is unbreakable, which is sustained with steadfastness by yoga practice, and which thus controls the activities of the mind, life and senses is determination in the mode of goodness.