In the book Death and Destruction, there's a spell for protection you could use. You need to get some conjure formulas called Fiery Wall of Protection -- you get the oil, and either the powder or the bath salt. You draw a bath and put some of the Fiery Wall powder or salt into it, and you also dress four small white candles with the oil and position them around the corners of the bathtub. You light them, and you get into the tub and let them burn down. This makes a "wall of protection" and, also, it washes away any existing jinx you may have had.
Some people also like to keep a picture of St. Michael on hand when they do this, as well.