For a good example of a song listen to the song NYC by Interpol. It's a good description i think of quiet BPD or even SPD. 

''I had seven faces, thought I knew which one to wear, but I'm sick of spending these lonely nights training myself not to care'' 

And there's a bridge in the song that is just stunning so fucking sad. The lyrics if I write them here won't hit as hard but the way he sings them is just amazing.

I would recommend checking it out, but I'm not sure it's good to listen to it too much, really drags me down. Sometimes I get lyrics stuck in my head and they make me depressed but I can't get rid of them from my head which is a hell I've rarely seen talked about.