改掉

shuì lǎn jiào de xí guàn wǒ yǐ jīng gǎi diào le

睡懒觉的习惯我已经改掉了。

I've given up the habit of getting up late.

gǎi diào chōu yān de huài xí guàn

改掉抽烟的坏习惯

give up the bad habit of smoking

tā zài xué xiào gǎi diào yī xiē huài máo bìng

他在学校改掉一些坏毛病。

He had a few rough edges knocked off at school.

wǒ xī wàng zì jǐ néng gǎi diào yǎo zhǐ jia de xí guàn

我希望自己能改掉咬指甲的习惯。

I wish I could stop biting my nails.