Hey Hey, English time!!
どうもどうも、うむうむ、英語英語

Aさん：Ghh I'm so done

with work..
Aさん：もう～いや、仕事、イヤ
Bさん：Yeah? It's one of those days eh?
Bさん：ほう？今日はそんなに酷いのか？
Aさん：Yeah, why can't it just be Friday already?
Aさん：そうだよ。。もう早く金曜日に慣れないかな？
Bさん：Meh, it will be tomorrow? Maybe take a power nap in the boardroom
since there are no meeting today?
Bさん：まぁね。。明日まで待とうよ。。ちょっとボードルームでPower nap（仮眠？）したら？
Aさん：I like the way you think, I might just do that... Why do they call
it a power nap anyway?
Aさん：いい考えじゃん！そうしょう！で。。なんでPower Napと言うんだろう？
Bさん：Meh... Corporate jargon innit.
Bさん：まぁね。。企業語じゃろ

I'm so done with ____ - I've given up on ___ (I don't want to continue doing it)
You can also use this with relationships (boyfriends/girlfriends/friends)

"I'm so done with my boyfriend right now, he keeps playing video games"
「彼氏の事はもううんざりだ。。ゲームばっかりしてて」

"It's one of those days eh?" -  It's a bad day for you huh?
One of those days = A day that isn't going the way you thought it would
"It's just one of those days.. you know? The ones where the buttered
side of your toast hits the floor"

Boardroom - A room with lots of chairs and a large table, used for
meetings (Yes I used to 'power nap' in the old boardroom I worked at
lol)

Innit - Isn't it? (British English, rarely used outside of the
UK....rarely used in the UK too haha)
Have a great night guys!!