振作

wǒ xiě le nà shǒu gē zhǐ shì ràng zì jǐ zhèn zuò qǐ lai

我写了那首歌只是让自己振作起来。

I wrote that song just to cheer myself up.

zhèn zuò shì qì

振作士气

give oneself a pep talk

zhè huà ràng dà jiā zhèn zuò qǐ lái

这话让大家振作起来。

These words got everyone stirred up.

hái zi men zhèn zuò qǐ lai bǐ sài hái wèi jié shù ne

孩子们，振作起来！比赛还未结束呢。

Buck up, kid! It's not the end of the game.