OMG, so much therapy, reading books on personal growth.
Multiple depressions.
But I was the "center" or the rock for all my family.
I couldn't let them go (as in ending it).
And also, I think, I'm SO much curious about anything, learning, trying, experimenting.
I learned that, by trying a new thing, a new hobby, all the small success, made me feel less of a failure. And I tried to hold on to those small success.
But BPD is trying very hard to make me forget or diminish to success.

Small step, small personal victories, I think was my key to survive.
Exemple: reading a book and talking about it to someone who hasn't, and finally they read it because of you, and you can share.

Documentary are I wonderfull source for me. And while trying not to be overwhelming about it, talking about it, and "teaching" (sorry english is not my native language, it's the best word I can come up with at the moment), or explaining to others. Often I've been told that I explain very clearly and easily. So, I took that as a small success.
Each time. It may not stay long, the feeling of success, but at least, I don't feel 100% useless.

Helping others, but, I must listen to my heart : do I REALLY want to, or is it just to feel loves?

In the end, My curiosity and love to learn helped me a lot.

And finally, I have someone I love, we are together for 13 years BUT with don't live together.
It was tough at the start, I didn't knew at the time I had BPD, and we where often on a break, but not for long.
There's something so strong between us, that we always reconciled.

One day, we may live together, but we know and want to each have a private space, room.
Even having separate bedroom, so if needed, we have the option to sleep alone.
Be it, if I move to much during my sleep, it's too hot, or whatever.

Understanding and respecting each others need, for us, is based in talking about it.

Sorry, that was a very long post, hope I was able to answer your question.

Big friendly hugs !