What Is This Pain I Feel?

What is this pain I feel?
And why are these tears falling?
I have a smile upon my face
but my heart is heavy with sorrow
and grief.
My mind is like a freight train
hitting me with regrets and mistakes
I've made.
What is this pain I feel?
Why can't I just be happy for once?
Why are these tears falling?
I wish they were tears of joy,
but my heart is so laden with burden.
What Is This Pain I Feel?