when did I disappear (rewrite)

I don't know how I feel
God knows I've tried
but I always come up empty
when I look inside
I knock at my door
but there's nobody here
when did I disappear

I pass by a mirror
and I still see my face
but when I look into my heart
something's out of place
my life was once in focus
now everything's unclear
when did I disappear

my hopes have gone away
and my heart's been overused
everything else is either
anxious or confused
my dreams have all evaporated
to the atmosphere
which did I disappear

when I wake up tomorrow 
I'll still be someone else
trying hard to find a path
for returning to myself
I don't know where I'm going
but my time is drawing near
when did I disappear
when did I disappear