Sorry, but I might go philosophical here. 

While I was going through another panic and worry episode, I got to thinking...

What if the instability and emotional lability is like a tree being cut or concrete being hammered? I mean, with each time your mood shifts, it cuts into the stability of the emotion and mind and the longer it chips, the easier it is to become completely unstable, psychotic, and whatnot.

An example. I go into the hospital. I stabilize (new concrete is laid down to reinforce the cracks in the old one) and come out. When I am with others or find a trigger, I can kinda hold myself together, but the concrete of stability takes a hit and a small piece falls off. After a while, you have broken the structural integrity of the concrete and it is crumbling. At this point, your emotions run rampant and your thoughts go mad. After that, the concrete crumbles and you spiral to a point of no return. Then you are returned to the hospital to lay down more concrete. 

Abandonment is more like a jackhammer, but same thought applies, just quicker. 

I guess you can think of coping skills and dbt as a stronger grade concrete to reinforce the building for damage and therapy as a way to teach you how to lay more concrete in order to become self sufficient and reliant while helping you not shatter as much with each hit. 

It was just something that went through my mind on this subject. Any thoughts on if this is a somewhat viable thought, or did I just go a bit more insane last night than I realized?

Tl:dr: the unstable part of the emotions of BPD can be related to the structural integrity of concrete after being hit continually for a period of time. Dbt and therapy reinforce concrete and teach you how to resurface it. 