New here. After my spouse picks a fight where I get blamed for everything but I hold my tongue as to not escalate things, it really gets me in a hopeless headspace. What strategies help to get back to normal mindset? Allow you to fulfill the rest of life’s responsibilities? Help you to go back to the next interaction with your spouse with some scrap of positivity? I have a lot to look at in this site yet, but thank you, thank you for your support, and expect more questions

I can identify with the hopeless headspace. What I try to do is change the channel in my head and not dwell on the craziness… I try to change my thoughts from negative to positive. Friends, friends and more friends along with activates without my SO helps. I try to savor the moments with my friends and try not to burden them with the difficulties I have at home.
Acceptance of my SO having BPD traits helps me. I can only change myself and how I respond to the madness. I try not to engage when the false accusations fly, I do not have to defend myself. Defuse the situation, savor the moment when defusing works, acknowledge a win.
For me the next interaction with my SO is usually like the past craziness never happened, I leave the door open for discussion, however if the craziness starts up I will not engage in it…
If I start feeling sorry for myself, having resentments, or being angry about the craziness is like me drinking poison and expecting it to work on someone else. Not a good spot to be in.
Do well at work, join a club or gym. Get out and do stuff for yourself. This site has helped me to do that and has changed my outlook.