2 sentences for 自律 (zì​lǜ — self-discipline)

1. 他是一个非常自律的人。

   tā shì yī gè fēi​cháng zì​lǜ de rén.

   He is a very self-disciplined person.

   Source: Dong Chinese Dictionary

2. 高度的自律是每个优秀运动员必备的品质。

   gāo​dù de zì​lǜ shì měi gè yōu​xiù yùn​dòng​yuán bì​bèi de pǐn​zhì.

   A high degree of self-discipline is an essential quality for every elite athlete.

   Source: Dong Chinese Dictionary