Am I worthless?

Inside I am crying,
Outside I am smiling,
No one notices,
But it's hard for me to control this.
When you see me walk by,
It doesn't look like 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,
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 take a walk full of nothing but shame.
As time moves slower,
My self-esteem gets lower.
Am I nothing to this world?
Or just another worthless teenage girl?