home truth

"catalog" を英英辞書で調べていた時にCambridge English Dictionaryのサイトの画面の右側にWORD OF THE DAYのコーナーがあり、次の様な興味を引く表現が掲載されていました。

"home truth"
a true but unpleasant fact about yourself that another person tells you: He decided it was time to tell her a few home truths.

他の辞書での "home truth" の説明も確認しました。

・Oxford English Dictionary: An unpleasant fact about oneself, especially as pointed out by another person.: ‘what he needed was someone to tell him a few home truths’
・Collins Dictionary: Home truths are unpleasant facts that you learn about yourself, usually from someone else.: [British] We held a team meeting and a few home truths were spelled out.

他人から言われるなんて、一番聞きたくない事ですね。