扪心自问

捫心自問
ménxīnzìwèn
  1. to ask oneself honestly
  2. to search in one's heart

CEDICT

to reflect on oneself; to ask oneself honestly

Wiktionary

扪，按、摸。扪心自问指自我反省检讨。如：「你扪心自问，惭愧不惭愧？」也作「抚心自问」。

重編國語辭典

自我反省检讨。

維基詞典

Entry Composition

1 扪 mén
  1. lay hands on
  2. to cover
2 心 xīn
  1. heart
  2. mind
  3. intention
  4. center
  5. core

classifiers: 顆, 個
3 自问 zìwèn
  1. to ask oneself; to search one's soul
  2. to reach a conclusion after weighing a matter