When demons showed up, St. Faustina knew what to do.

Turn to any page of St. Faustina’s Diary, and you’ll find spiritual gems, like this one: Thursday. Although I was very tired today, I nevertheless resolved to make a Holy Hour. I could not pray, nor could I remain kneeling, but I remained in prayer for a whole hour and united myself in spirit with those souls who are already worshiping God in the perfect way. [Then Jesus said to me,] Your prayer is extremely pleasing to Me (Diary, 691).

Is there someone in your life who frequently annoys you? Here's how St. Faustina dealt with those who troubled her.