What's the problem?

I have issues, I know that.  I'll be the first to admit it.  But I just can't get over the feeling that there is something really wrong with me.  I just can't seem to do the things I want/need to do anymore without feeling completely overwhelmed and just usually end up shutting down completely because of the stress of it all.  Nothing I say or do seems to get me any help from my family.  I am tired.  Just really, really tired. Tired of everything.  Tired of trying.  Tired of pretending.  Tired of falling short of what everyone else thinks I should be.  It's really hard to face the mornings, knowing that I will end up feeling worse and worse as I go throughout the day and wishing the hours away until I can climb back in bed and sleep...oblivious to the crud for a few sweet hours.  Why do I feel like this and how do I make it go away?  I just want to feel happy and healthy again.