When I am tired.

When I am tired,
You are too much,
For my brain to concentrate,
On the things on which,
My brain should concentrate.
There are mistakes.
There is frustration,
And it all feels,
Ever so much harder.
Like the dripping tap,
Or the barking dog,
Your enthusiasm,
Peppers my mental frame,
With armour piercing bullets.
As you shatter my calm,
So I taint your joy,
And that gnaws at me.
That pains me.
I am not who I want to be for you,
When I am tired.