Meditate guys and girls, I used to think it was impossible with my racing thoughts. Do it often and stick to a routine. Us borderlines need structure I promise you it will make you happier. Dbt therapy is key. A diary card app is key as well and another thing I blew off in the beginning. Stay hydrated and try to get any form of exercise in the morning even if it's for 3 minutes. Every single day.

If I showed you my diary cards you can see the direct correlation between me being in a down state and me stopping something as basic as not taking that walk anymore.. It's tedious but it's necessary and I wasn't doing any of this during my darkest times and I wish I did. 
Don't try to rely so much on others that includes therapists. Try and build yourself up. Avoid negative music, avoid news, avoid all the small things that make you feel anything other than happy. 
Don't say you are suffering with bpd, say you are diagnosed with bpd. Don't label your self to be a victim because you aren't at all, you are a survivor.