Hi Elana...I am like that as well and the one person that triggers me the most is someone that I love and enjoy being around (my niece). However, she has a tendency of calling me when she's angry or sad or a little tipsy and she wants to rant about work, married life, etc. As much as I want to be able to listen to her, for her, if I do then by the time we get off the phone I am so depressed that I can't function but she on the other hand is fine because she just unloaded on me. It's not just her though so I go through this quite often. I agree with the suggestion of removing yourself and/or putting some distance between you and the person that is triggering you. Luckily for me, my family knows i'm moody and thinks i'm a little weird so if I go off to be by myself for a little while so that I can breath and deescalate then they don't think much of it.