writing to reach you

It's good to know that you are home for Christmas
It's good to know that you are doing well
It's good to know that you all know I'm hurting
It's good to know I'm feeling not so well
Because my inside is outside
My right side's on my left side
Cause I'm writing to reach you now but
I might never reach you
Only want to teach you
About you
But that's not you
Do you know it's true
But that won't do