Firstly, hanks for posting this piece.
I think it's great that you are able to write about what your friends and relatives have faced with such empathy. I found your imagery very moving.
Because I see so much potential in the piece, i'm going to be more nit picky than usual. Some of your lines contain too many syllables, which ruins the rhythm of the piece. I've take the liberty of doing an all over correction of these scanning errors and posted below for you. Feel free to ignore it, it's your baby after all, but I'd rather you spent your time working on another piece for me to read rather than working to correct it yourself!
Little lamb, little lamb,
I know no longer who I am.
Little fish, little fish,
why won't you just grant my wish?
Little hope, little hope,
why can I not seem to cope?
Little dreams, little dreams,
life is never as it seems.
Little lost, little lost,
I've paid exorbitant cost.
Little soul, little soul,
sinks in to a big black hole.
Rescue me, rescue me.
the voices won't stop haunting me!
I want out, I want out.
This is not what life's about.
Little nothing, little nothing,
My heart is no longer singing.
Help me please, help me please,
Will this be my destiny?
My head spins, my head spins.
Can't see where what's real begins.
Real true friends, real true friends,
I pray that the nightmare ends.