Hi knit knack and welcome! You will find an incredibly supportive community here willing to listen to you and share their own experiences.
Buying walking on eggshells and realizing you can only control your own reaction are two HUGE steps forward, and it can't be easy after 31 years. Even bigger is coming to bpdfamily and sharing your story. I came here last year completely lost and scared and the support from members here has truly saved my life, no exaggeration.
I suggest you get started browsing the tools in the right box

and participating in other threads to find members in similar situations to your own.
What are some of the things that trigger your husband, and what do you do to take care of yourself when he is dysregulating? (managing his emotions in an unhealthy way) Have you spoken to anyone outside of your immediate family about the situation?
All the best,
~ROE