willpower
noun [ U ] uk/ˈwɪl.paʊər/ us/ˈwɪl.paʊ.ɚ/
C2 意志力；毅力
the ability to control your own thoughts and the way in which you behave
It took a lot of willpower to stay calm. 要有很强的意志力才能保持平静。
I don't have the willpower to diet. 我没有节食的毅力。
Synonym: determination (TRYING HARD)
Compare: self-possession