make a practice of (doing something)
To do something habitually. I've made a practice of doing 50 pushups every morning when I get out of bed. If you make a practice of investing some of your spare income, you'll be pleasantly surprised how much can build up.
make a practice of something
and make something a practiceto turn something into a habitual activity. Jane makes a practice of planting daisies every summer. Her mother also made it a practice.
make a practice of
Habitually do something, as in Bill makes a practice of checking the oil and gas before every long trip. [c. 1900]