go against the grain
US /ɡoʊ əˈɡɛnst ðə ɡreɪn/
UK /ɡoʊ əˈɡɛnst ðə ɡreɪn/

1.
违背本性, 与众不同, 逆潮流而动
to be contrary to one's natural inclination or to generally accepted norms or practices
:
•
It really goes against the grain for him to ask for help, as he's always been so independent.
对他来说,寻求帮助真的违背了他的本性,因为他一直都很独立。
•
Her decision to pursue art went against the grain of her family's expectations for her to become a doctor.
她追求艺术的决定违背了家人希望她成为医生的期望。