I have BPD. One of the things tbat got me was depression, so much so that I cut muself in highschool, I had anti depressants etc. nothing worked. At the end of the day, what got me through it was my family finding out. I was embaressed about it, but they were there all the way through it. My advice. Simply get help from those around you, tell yourself EVERY DAY that you matter and don't space out into that void. Delete all sad music, no matter how beatiful. Cut people who drag you down out, find an obsessiom. I found the gym in grade 9/10..I re-found my religion (not pushing it down your throat just saying). It's hard, I still struggle everyday. Also bro, stay away from relationships (unless you're already in one). I don't know if you are at that point, but please remember suicide is not a solution, it WILL get better. Find something positve and good in everything, really go look for it.