Explanation: Since the narrator says "I was tormented by what i had done" we can infer that he sees everything in such a way because he feels regret or remorse for that specific action and his outlook on the world at that moment is skewed.
The narrator says that he has been tormented, although the nature is important here it is only showing us this his mental state is anguished and he is unnerved by anything that seems eerie.
