Before Sunset

を英語の勉強に使おうと思います。

I actually altenate in between thinking everything is irrevocably screwed up
and things might be getting better in some ways.

Better? How could you possibly say that?

irrevocably
revocable
revoke : 再実行する

的な関係で、再実行できない = 決定的に
な意味になるぽい。
http://eow.alc.co.jp/irrevocably/UTF-8/?ref=sa

...free from the consuming frenzy.

http://eow.alc.co.jp/frenzy/UTF-8/?ref=sa