こけつに　いらずんば　こじを　えず

虎穴に入らずんば虎子を得ず

Nothing ventured, nothing gained

(lit. if you do not enter the tiger's cave, you will not catch it's cub)

かろとうせん

夏炉冬扇

Something which is out of season and therefore rendered useless

(lit. summer heater winter fan)

きしかいせい

起死回生

To comeback from a desperate situation and make a complete return

(lit. wake from death and return to life)

じごう　じとく

自業自得

You reap what you sow; that's what you get

(lit. one's act, one's profit)

さるも　きから　おちる

猿も木から落ちる

Nobody's perfect

(lit. even monkeys fall from trees)

たでくう　むしいも　すきずき

蓼食う虫も好き好き

To each his own

(lit. there are even bugs that eat knotweed)

ねこのてもかりたい

猫の手も借りたい

So busy that you're willing to take help from anyone

(lit. willing to borrow a cat's paws)

みっかぼうず

三日坊主

Giving up at the first sign of difficulty

(lit. three day monk)

みずにながす

水に流す

Water under the bridge

(lit. let flow in the water)

じゅう　にん　と　いろ

十人十色

to each his own

(lit. ten people ten colors)

こころがかよう

心が通う

To understand each other well; to have each others hearts synced

こころをこめて

心を込めて

Wholeheartedly

ちもなみだもない

血も涙もない

Cold blooded; heartless

ようするに

要するに

The point is; in short; after all;

きにいる

気に入る

to be pleased with; to suit

じぶんの　くびを　しめる

自分の首を絞める

to dig your own grave; to ask for trouble