Sick of it all

I'm sick of being ill. If it's not the schizophrenia, its the depression, which means I'm struggling to fight the schizophrenia. I'm tired, both mentally and physically, I just don't care any more. I hate feeling like this, it makes me feel dead inside, like I don't exist, and if I do, hen it wouldn't matter if I didn't.

I've had 10 days of nitrazepam, which has given me a drugged sleep, so at least I've been physically rested (your brain doesn't stop working, it still goes on as per usual). I've finished the course now, so doubtless I'll go back to not sleeping, which will make the depression worse. Is there nothing I can do?