You know, being a follower of Jesus, I've been taught to put others before myself.  I also read in the Bible, however "Love your neighbor AS YOURSELF.  So, as I've been working toward breaking my own codependency and DE-pendency with people, as well as counseling others as I overcame those things, I have come to realize that my only responsibility is to myself.  It's not that I don't care about others, but in the end, I have to live with ME, when those others don't reciprocate or aren't there.
I read something interesting from the BeyondTheEcho group today.  I want to share:
One day, I went down a long road...there was a hole..I didn't see  it..I fell 
in it...it was not my fault..
The next day, I went down the same road... I saw the hole...I  fell in it 
...it still wasn't my fault..
Then the next day came and I went down the same road again...I  saw the hole, 
I fell in it even though I didn't want to..it was a  habit...
Then the very next day, I went down the road again...I remembered  that there 
was a hole there...I saw it..and chose to walk around it and not be  drawn 
into it...