i am biting inside my mouth. how can i stop that?

[1337]

I have this weird habit for 10 years. I do not have any serious mental problem. I am biting the inside mouth surface till i make it bleed. Sometimes I tear off very small pieces from the inner surface of the mouth. If i bite it for days, my mouth hurts for about a week. I really want to stop biting my inside mouth but i can't. I bite the inside of my mouth completely consciosly. Sometimes I can't talk or eat or drink water because of the pain. I need your advices. This habit is ruining my life. Have a nice day!

Edited June 7 by 1337
i added more info about problem

[Raze]

https://www.bfrb.org/articles/how-to-stop-biting-inside-of-cheeks

 

Edited June 7 by Raze

[1337]

22 hours ago, Raze said:

https://www.bfrb.org/articles/how-to-stop-biting-inside-of-cheeks

Thank you bro. This is my first biting-free day. I will try to find the inner reasons. And i realised that my mouth is always dry. I am going to remake my water drinking habit. 

Edited June 8 by 1337
basic grammar mistake