self-contemplation       
noun [ U ] uk/ˌself.kɒn.təmˈpleɪ.ʃən/ us/ˌself.kɑːn.t̬əmˈpleɪ.ʃən/
 自省
serious and quiet thought about yourself, or about your beliefs and values
  To tackle the root of the problem, some kind of self-contemplation or psychotherapy is required 
He did not—so far as we know—spend as much as a second on self-contemplation. 据我们所知,他连一秒钟的时间都没有用来自省过。 
 - More examples
 - Her first album in nearly three years, it's a sweet yet powerful journey of self-contemplation.
 - We are waiting to see if they can now develop narratives that move beyond mere smug affirmations and self-contemplation.
 - His face wore that look of serious self-contemplation which the powerful display in moments of distraction.