BPD...it was more of a mess when I was in my 20s. There was a constant emptiness inside that I tried to fill with dating different men. Of course dating doesn't fill that void. It feels good in the moment, but I was searching for love that I could never find. I was very impulsive which caused me to overdose after an argument with my mom. Luckily, she knocked on the door to see if I was all right, came in my room and found me. She called the ambulance and I woke up in the hospital surrounded by family. Good times...
Now in my 30s, the BPD seems to have calmed down. I'm not impulsive and going around looking for someone to fill a void anymore. I literally used to toss and turn at night in emotional and physical pain from feeling emptiness and such a longing...I was craving someone/something all the time.
I believe things will get better, You might start to even out with age, just don't give up on yourself! Someone mentioned DBT therapy, definitely get into that. It's very helpful for BPD.