Thank you for your reply, JMG! One more thing to clarify... I have a particular person in mind. This person is no mage by any stretch of the imagination. However, there is a lot of hostile energy that goes from this person to me. Am I vulnerable only in the presence of the person (and better wear an amulet) or at all times? I feel drained after interacting with this person. I also spend a lot of time ruminating about my situation vis-a-vis this person that I would love to stop.