2 sentences

1. 事在人为。

   shì​zài​rén​wéi.

   Success depends on human effort.

   Source: Dong Chinese Dictionary

2. 事在人为，只要努力就有成功的希望。

   shì​zài​rén​wéi, zhǐ​yào nǔ​lì jiù yǒu chéng​gōng de xī​wàng.

   Success depends on human effort; as long as you work hard, there is hope.

   Source: Dong Chinese Dictionary