You can drink holy water, for example when you are sick, first thing upon getting up in the morning or after fasting from food and drink for a little. And after prayer.
Anoint your head with oil, putting a little on your ringer and making the sign of the Cross on your forehead saying, "St. John, pray to God for me" when you are sick, or whenever there is a need.
No harm done asking your priest about this, too. He may have more resources for you.