Weight of world

What is wrong with me?  I am dead inside.  I feel disconnected from man and from God.  I feel alone in all of this.  Sometimes, I don't know who I am.  I wonder if this is depersonalization.  Nothing, not even I or even God, seem real anymore.  What is really going on with me?  I wish I knew.  Right now, I am just overwhelmed.  It is as if the world's problems are on my shoulders.