A recent break-up

I am going through a recent breakup but it has been a long time coming.  I knew I wasn't happy in May of 2011.  It ended badly.  (We were drinking and he came towards me yelling.)  The police came.  I left - the police took me to a hotel - and haven't been back, just to pack my things in boxes.  There is NO reason for me to miss him or text him.  It was a completely unhealthy relationship.
My father had PTSD and my mother did somethings she should not have done.  He was abusive towards her.  Since then I always promised myself I would never stay in an abusive relationship.
It was a verbally abusive relationship.  I am so sad about it.  Part of me still wants to fix it. 
I need to really think on the unhealthy aspects and try not to focus so much on my lonliness.  I am terribly lonely.  In a new place, without a home, without a job, without many friends.  I am starting all over again, again. 
I just don't understand why I keep getting into these unhealthy situations.  I can tell it is a pattern.  I want to learn how to break the pattern.  Not attract unhealthy people into my life.  I'm terrified.  I just am.