Pisaries Creator

It is within the walls my heart rests,
and annoys from the sound of others.
It is not in my welfare to keep,
I set myself free years ago,
no more negative thoughts,
nothing to dwell over because all 
scattered away.
What remains behind is a smile,
not a scowl or grimace.
A cooling of the arteries is the answer.
It is something to laugh for and 
I know it is not ink that is poison.