This is the 6490th most frequent Chinese word.
改掉
To "get rid of" or "give up" (a habit or practice).
In this sentence, '改掉' is used to describe the action of breaking or eliminating a bad habit.
他改掉了抽烟的习惯。
He got rid of the smoking habit.
Here, '改掉' expresses the necessity to drop an unhelpful behavior, focusing on a specific issue.
你需要尽快改掉拖延的毛病。
You need to get rid of the procrastination problem as soon as possible.
In this context, '改掉' is used to convey the ongoing effort to change a negative habit.