6 How to Say “change one’s attitude / turn over a new leaf” in Japanese

The Japanese phrase “kokoro o irekaeru” means to change one’s mindset, attitude, or behavior in a sincere and deliberate way. It is used when someone decides to correct past mistakes, adopt a better approach, or start fresh with renewed determination. The expression often appears in contexts such as personal improvement, apologizing for wrongdoing, restarting efforts after failure, or making a serious commitment to do better.

change one’s attitude / turn over a new leaf

From the tailor’s shop in Westgate came a glow of light; and when Simpkin crept up to peep in at the window it was full of candles. 

The Tailor of Gloucester by Beatrix Potter

したてやの みせから、
ひかりがみえた。

  • subject: 
  • 光が

There was a snippeting of scissors, and snappeting of thread; and little mouse voices sang loudly and gaily—
“Four-and-twenty tailors
Went to catch a snail,
The best man amongst them
Durst not touch her tail,
She put out her horns
Like a little kyloe cow,
Run, tailors, run! or she’ll have you all e’en now!”

ふくを したてる おとがした。
ネズミが うたう こえがした。

  • subject: 
  • 服を仕立てる音が
    ネズミが歌う声が

Then without a pause the little mouse voices went on again—
“Sieve my lady’s oatmeal,
Grind my lady’s flour,
Put it in a chestnut,
Let it stand an hour——”

ネズミのこえは うたいつづけた。

“Mew! Mew!” interrupted Simpkin, and he scratched at the door. But the key was under the tailor’s pillow, he could not get in.

シンプキンは カギがなくて みせに はいれなかった。

The little mice only laughed, and tried another tune—
“Three little mice sat down to spin,
Pussy passed by and she peeped in.
What are you at, my fine little men?
Making coats for gentlemen.
Shall I come in and cut off your threads?
Oh, no, Miss Pussy, you’d bite off our heads!”

ネズミたちは べつのきょくを うたった。

  • modifier: 
  • 別の曲を

“Mew! Mew!” cried Simpkin. “Hey diddle dinketty?” answered the little mice—
“Hey diddle dinketty, poppetty pet!
The merchants of London they wear scarlet;
Silk in the collar, and gold in the hem,
So merrily march the merchantmen!”

ネズミたちは シンプキンに こたえた。

They clicked their thimbles to mark the time, but none of the songs pleased Simpkin; he sniffed and mewed at the door of the shop.
“And then I bought
A pipkin and a popkin,
A slipkin and a slopkin,
All for one farthing——
and upon the kitchen dresser!” added the rude little mice.

どのうたも シンプキンを たのしませなかった。

“Mew! scratch! scratch!” scuffled Simpkin on the window-sill; while the little mice inside sprang to their feet, and all began to shout at once in little twittering voices: “No more twist! No more twist!” And they barred up the window shutters and shut out Simpkin.

ネズミたちは シンプキンを しめだした。

  • predicate: 
  • 締め出す

But still through the nicks in the shutters he could hear the click of thimbles, and little mouse voices singing—
“No more twist! No more twist!”

ネズミたちは うたう。
「いとがない!いとがない!」

Simpkin came away from the shop and went home, considering in his mind. He found the poor old tailor without fever, sleeping peacefully.

シンプキンは いえに かえった。

Then Simpkin went on tip-toe and took a little parcel of silk out of the tea-pot, and looked at it in the moonlight; and he felt quite ashamed of his badness compared with those good little mice!

シンプキンは じぶんの あくじが はずかしくなった。

  • modifier:
  • 自分の悪事が
  • 心を入れ替える(こころ を いれかえる, change one’s attitude / turn over a new leaf)

The Japanese phrase “kokoro o irekaeru” means to change one’s mindset, attitude, or behavior in a sincere and deliberate way. It is used when someone decides to correct past mistakes, adopt a better approach, or start fresh with renewed determination. The expression often appears in contexts such as personal improvement, apologizing for wrongdoing, restarting efforts after failure, or making a serious commitment to do better.

When the tailor awoke in the morning, the first thing which he saw upon the patchwork quilt, was a skein of cherry-coloured twisted silk, and beside his bed stood the repentant Simpkin!

したてやが よくあさ めざめたとき、
チェリーのいろの いとがあった。