So I was more recently diagnosed, within the last year. Nothing in my life has changed, really other then a proper diagnosis. I was already using DBT to work on my PTSD and so a lot of the things to start dealing with the BPD seemed like a lot of things I knew. However the feeling that I had been not properly diagnosed for so long and always having that feeling of finally conquering my trauma and feeling like I’d feel better then is kinda gone. And that was obviously an unrealistic thought but it was still almost like a defeat. Everything I read online when trying to research it was just so horrible and negative and just made me feel very hopeless. And a lot of the behaviors have certainly gotten better, before diagnosing even, but I still get irrationally insecure and dramatic and emotional and it really messes with my marriage and familial relationships. 
At this point, after tonight with yet another 2 hour long argument that ended up mostly being my irrational thoughts, I laid in bed with my husband and I dissociated, and he shook me out of it and worked on getting me grounded but in that moment I really felt like I would be happier or at least healthier and more stable just being numb. 
I haven’t been able to accomplish anything around the house. I don’t work. My husband provides everything for me, and I can barely bring myself to shower, let alone clean and cook. And so I wake up everyday and I feel like shit walking out of the room and I see all the things that need to be done and I can never get to doing them. In part by my husband sleeping during the day and cleaning disrupts him and in part just by me feeling just overwhelmed by it. And the good days just frustrate me more because every time I make progress and fall back it feels like this immediate failure and yet again being unable to achieve my goals. 
I think at this point I just need more support. There is only so much people in your life can do when they don’t live with what’s going on in my mind. And I just want to feel less alone.
Anyone have any advice or anything; I’m just trying to find what will help and work from me and I feel like talking to other people who have BPD or have loved ones with it may be able to provide some insight.

TL;DR:
Feeling lost within a new diagnosis and feeling hopeless in day to day life, looking for some advice.