Who am I?

Every time I look
  Into the mirror,
I can see I'm trying to hide
  My true face
  Identity.
I am not who I was six years ago
  Or even a year ago...
I change who I am whenever I get the chance...
  When no one notice
Or,
  When they are all gone...

I'm wearing this clay mask
  That's always smiling...
A fake tear running down a fake cheek...
  The feelings are half and half,
Showing the other side.

People fall for it though...
No one can see through it,
  Everyone believes the lies.
Sometimes I do too...

I don't know who I am anymore...
I don't understand my life anymore.
Who am I?
 Or,
Who was I?
Do I still wear this mask of mix feelings
  Or
Did I finally rid me of its existence?