I can't stop my thoughts from going after myself and my past 'mistakes' or choices that ended in something less than ideal. And for some reason it has more recently centered around the concept of not having a romamtic partner. The thoughts' aggressive tendencies have become more subliminally antagonizing rather than directly attacking stuff I can't do. 

It's like showing me what great things could've been or what negative things did happen, rather than explicitly saying "you caused this horrible thing."

I don't know if this seems familiar to anybody and if anyone has tactics for calming down enough to at least sleep.