What am I looking at?

I stared into the mirror
My face reflected upon the glass,
I stared and stared
Hoping for a sign, a mark,
To prove I was beautiful
That I mattered, that I had value,
People shunned and rejected me
For I was not a pretty face,
Too late I realized
I was looking in the wrong place,
The mirror could not show
For what mattered was the inside.