I'm pretty severe BPD (which in my case I think is a stand-in dx for C-PTSD, but I fit all the BPD criteria too b/c I am very low-functioning) and have done DBT and it helps but a lot of it is aimed at less self-aware people in general. I mean, people who are suffering because of low self-awareness and (conscious) distorted beliefs of reality.

Personally some of the things DBT teaches are really obvious and frankly not always helpful when, in the first place, I am treatment resistant because I often have such horrible emotional states and such hopelessness/emptiness that it pretty much takes the choice aspect out of choosing to get better, I mean fundamentally you have to believe you can and want to get better. That's where DBT fails for me, where the skills and extra awareness are just simply not enough, and I can't really even adhere to it or internalize it.

I find that what works best for me is just the transference in general, it sort of gives me a good parent to actually make me want to do all the things I just can't do for/by myself. Mindfulness also can help.. sometimes.

That said... healed, I think it is worth a try at least. You can just take what you want out of it. If you learn even 1 thing, and I think anybody would learn at least 1 good thing from DBT... then it was worth it. Just try to hold onto 1 thing. Hope that helps.