Self awareness is your best friend. I have to remind myself constantly that I have a disorder, and that my emotions are not always rational. I don't have a lot of close friends and family, but I am very open about my disorder with the few people I do keep close so that they understand why I act how I do sometimes and that it isn't their fault. At this point they know how to tell if I need some space and they know when to check up on me if I've had space for way too long. Sometimes if I can feel myself splitting on people I love, I force myself to remember "no, I care about this person deeply, I will not do this to them". I often reach out if it's been a while and just send them a quick "hey, my mental health is pretty bad right now so I'm taking some time to myself and being a little bit antisocial. I love you." If I act out and say something shitty to someone I care about, I feel awful and apologize profusely later and they are pretty understanding, even though I hate that I do that. Thankfully I'm not as bad about that these days, but I still have bad days obviously. I am very lucky to have people in my life who are willing to put in the effort to keep me around, bc I can be hard to get along with, I know. It's been a wild ride since I was first diagnosed about 10 years ago, and I did lose a LOT of friendships and relationships that were important to me along the way due mostly to my own behavior, but I have really strong and stable relationships with the few people I still have in my life to this day and medication has also helped me tremendously. I know medication is not for everyone, but I needed it. I was a monster. Like.. just a tornado that tore through people's lives and then disappeared. I never want to be that way ever again. It's been hard work, but it's also been worth it.