Why do I always swear? How to change it?

You have begun to pay attention, and you will naturally be restrained when you speak. I used to be like this. I used to swear at every turn. I am proficient in Chinese, English and Japanese (just kidding, just Chinese and English. Haha = =). I think it's cool ... but once I feel uncomfortable, I naturally talk less ... You really can't help it ... Sometimes I scold myself in front of the mirror ... When people curse, my face is very annoying. When you see their "bad looks", you know they are like this.