I am in my 30's and I know BPD has affected my life in every single way.  I have instability in my jobs, friendships, and relationships.

I had a very lonely childhood, and was basically left to my own devices, so I developed a very serious video game addiction.  I am constantly second-guessing myself, and feeling like I have to put on a mask to function.

My father growing up would be prone to exteme fits of anger where he would EXPLODE and spank me with all his might, pull my pants down and continue smacking as hard as he could, and I never knew why.  He did this a lot to me and my sisters until my oldest sister was 15-16.  But he never ackonwledges it, and calls me a liar when I bring it up, and so do my sisters, even though I remember their blood-curdling screams begging their little brother for help while they were held on the floor being hit.

After some point, it just stopped and was never acknowledged.  I spent time in a mental institution in my early 20's, and I told the nurses about the abuse, and they called in my family.  Both of my parents and sisters called me a liar, and the staff believed them and decided to up my meds, because they said I'm a well-documented liar.

A few years back, my mom passed, so I never got the chance to make things right, but I am almost certain she had her own BPD issues, because she would be extremely verbally abusive, and would call my other sister "Hell on Wheels" and other shit when she was 5-7.  Whenever I tried to discuss this with them, they'd interrupt me mid-sentence, say I'm emotional, and wrong, and that I need to up my meds.

When I would get angry, they would say "See?  Now, you definitely need your meds."  It was absolutely maddening.

So, today, I tried to discuss it again, and he started getting defensive again saying 

d:"I understand your words"

me: "But you don't believe them"

D: "I acknowledge them."

I tried my best to not rage, and explained that this invalidation and refusal to admit any fault is why I am the way I am.  I told him how much I struggle, how alone I am, and how after he dies I will have no one, and he didn't even care.  All he wanted to do was fucking argue about how I'm wrong.  I said "Do you want me to ever have kids?  Marry?  Have a stable job?"  He said 'yes of course'.  

I said "I will be clear about this.  If you refuse to acknowledge any role in this, and refuse to work with me, I will likely not be alive much longer after you pass, because I don't want this life for myself, and if you invalidate everything I say until you die, I will not heal from this.  You can continue to argue with me and keep doing what you're doing, or you can help me heal, and become a better person.  If you want me to succeed, I need you to trust me."

He said nothing, so I just walked away.  I've had this conversation with him 20 times, and every time, he just suggests I need to see a new doctor or up my meds.  He absolutely refuses to admit he ever did anything wrong, and believes I am purposely 'acting out' to get attention.