Poor me

Can you hear it,
the tears I've cried;
can you see,
the years I've tried...

Do you only see,
my bitter ways;
have you only seen,
my lonely days...

When I'm all alone,
as you sleep at night;
I sit awake,
in fear and fright...

I cannot take it,
not anymore;
as I lie awake,
on this cold hard floor...

My pride, my strength,
I am to blame;
will my life,
ever be the same...

Please tell me who's to blame...