worthless teenage girl

inside I'm crying
outside I'm smiling
no one notices
but its hard for me to control this
when you see me walk by
it doesn't look like it but I want to die
thoughts racing through my head
then comes the tears that I shed
how can I change
all the tears and rage
you say you understand
and all I need is a helping hand
that may be true
but first take a walk in my shoes
sadness, angers, and unbearable pain
you'll be taking a walk full of nothing but shame
as time moves slower
my self-esteem gets lower
am I nothing to this world
or am I just a worthless teenage girl?