TLDR; How do you manage splitting when going through difficult times? Any tips would be great. 
I went through two traumatic things in the last two weeks. It’s been difficult and I find myself splitting and having outbursts of anger at times. I feel like this is a mix of my PTSD and BPD but i feel posting on this subreddit would help. I had to go back into therapy because of how severe my symptoms were getting. It sucks. I feel like I’ll always been stuck in this cycle but I know I am better than this. I am just angry at the circumstances that happened and not my loved ones. Whenever I spilt, I always apologize and explain to my friends and dad that I’m just going through a lot and I know that doesn’t excuse my actions but I want them to know it isn’t their fault. As for the outbursts of anger, they usually happened on my own.