TATRA STHITAU YATNO,BHYASAH
Of these two, effort towards steadiness of mind is practise.
Here Patanjali means continuous practise, not just for one or two days. You have to always be at it, not just a few minutes a day and then allowing the mind to have its own free time all the other hours.It means you become eternally watchful, scrutinizing every thought, every word and every action.
Book one 13.
Translation Sri Swami Satchiddananda