I feel like I post all over the shop hope you don't mind me bobbing in here :)
I don't have a BPD diagnosis (my psychologist said I meet five of the nine criteria) but I have elements of it and am going to do DBT so I thought I would post.
I struggle with self harm, although I can go long periods without it (4 years), when I do self harm it is quite intense and takes over everything. I have spend 18 weeks in a psychiatric unit this year due to my mental health problems, particularly how I get when I self harm.
I am pretty tuned out to how I feel, I rarely cry and often am not sure how I feel. Like when I SI I am not sad, or cross, just, normal I guess. Initially it was a huge barrier to getting support in some ways because I look like I am in control and feeling ok, when in reality I can be very upset, I can say I am really upset but my body language doesn't match. So people would be saying "you seem ok" and saying I didn't need support, but now, they know you have to listen to what I say and not look at how I present... I have great support now, a CPN who I see once a week and a psychologist that I see once a week who will be doing my DBT 1:1 with me.
I have been with my husband for seven years and married for four and have a great close circle of friends so relationships wise it doesn't seem to affect me so much. Sometimes I feel bad for my husband though!
I have OCD and depression as well. The OCD can be very frustrating for me and it spills over into my self harm a lot, I am very obsessive and compulsive about it.