Lyric discussion by greenokiya 

Cover art for The Weekly Wars lyrics by Number Twelve Looks Like You, The

"I am my own killing moon" may mean that individual may be or end up being the cause of his own death

"These impure thoughts lead to soulless action" his impure thoughts drive him to do stupid things he does it over and over again, the "cycle" constantly having confused thoughts, not knowing what to do. maybe his own confusion has impaired his ability to know right from wrong

"A man with no release Cornered by his own thoughts Slowing the rotation of the cogs and he gears"

his thoughts are constant, he can never stop thinking, it may cause him a lot of anxiety and it may interfere with his everyday life, where he can't function because he has such overwhelming thoughts. it may haunt him and he has no escape or "release"

or it could completely be alcoholism.

it's either severe anxiety that he can't function properly. or alcoholism