戒烟

wǒ jiè yān le

我戒烟了。

I've given up smoking.

tā duō cì xiǎng píng yì zhì lì jiè yān dōu méi yǒu chéng gōng

他多次想凭意志力戒烟都没有成功。

He tried several times to quit smoking by force of will without success.

tā xià jué xīn yào jiè yān

他下决心要戒烟。

He made a resolution to give up smoking.