You are

You're the blister on my toe,
You're the blackness in my shadow,
You're the thorn bush in my meadow,
You're the misspelled word in my typo.

You're the splinter in my finger,
You're the hole in my armor,
You're the chains in my chamber,
You're the heat in my freezer.

You're the cut on my knee,
You're the mean man in my alley,
You're the flood in my city,
You're the regret in my history.