Will you still love me tomorrow?

I'm a lost world now,
I don't even know where I stand anymore,
I don't even understand this feeling of disappointment in myself.

Things are just fucked up,
and I don't even know what's the stuff that's fucked up.
And I don't even know why I'm crying;
I'm just angry, sad, and disappointed.

I can't take any of in any more.
and I'm falling apart,
I can't put up that happy front again and smile
and say yes everything is alright.

Laugh as though nothing bothers me;
the world is just a joke to me...
Everything was a sick joke played on me.

and I'm just tired of everything.
I just need to run away.
away from all this things pulling me down;
sucking the soul out of me as the days pass by.

I swear I'm going crazy,
one moment I'm laughing and the next I'm crying my eyes out.

Who am I?
Where's the Sabiruna I knew?
I don't even understand or know myself any longer...