Nerve Wrecked

My throat's closed and gone dry,
It won't quit. No matter how hard I try.
Tonight my eyes own no tears
And my heart has no fears.
Except that little hidden one.
There's always at least that one.
When I do what I have to do,
Will you continue to show me you?
Or will you walk away slowly, stunned?
And leave me alone, shunned?
There's something to be done,
More important than all that has been done.
As my lungs are uncontrollable,
I will appear presentable.
I will appear calm and collected,
When I'm really nerve wrecked.