MissC,
I'm in the same obessive-compulsive cycle. In my case, my nervous system is in overdrive and has not calmed down in awhile. This "hypervigilance" causes me to focus on the negative (even if I try otherwise) because my body thinks there is a threat. It makes sense to me that when the body feels that there is a threat, that the negative cues are the important focus as they are the ones you need to protect yourself. The positive or neutral signals seem to be thrown to the wayside so all of your focus is on detecting potential harm. I think this must be subconscious as I have immense difficulty changing my "negative" view even when I try. So, Miss, I guess what I'm trying to say is that what you are going through is definitely a result of your past and not a choice you are making in the present. Being aware of this is the first step, but I guess the next step includes your T being consistent over time so you can replace your old schema with new experience, and you (and me, too) taking what your T says and even though you "feel" that the negative is true, at this point, just construct some possible positive/supportive meanings (as you showed in your last post). I say this because I've heard if you start thinking it even if you don't feel it, then your emotions will follow. I'm giving you this advice because this is what I'm trying to do at the moment, so I'm not sure it will work. Just know that I'm also extremely frustrated at this point. Sometimes I feel things will get better, sometimes I doubt it. I've had these rollercoaster feelings even though we were attuned last session. Even though my T has promised me that I will stay at once a week until I choose otherwise, I can't shake the feeling that my anger fragment and neediness fragment are going to chase him away. As always, I wish you the best of luck! Let us know how it goes.

In the meantime, here is a horrible childhood joke memory that was triggered by your title, LOL.

Why does a dog chase his tail? To make ends "meat".
Ha ha. I told you it was horrible. Maybe you should put the trigger sign on your post, hee hee. Love you!