| | Tongue biting
I also suffer from the awful habit of biting my tongue. I didn't realize it was so common a habit until I looked in to this site.
I try hard not to do it but find it happens when I'm watching TV or concentrating on other things.
I bought a 'shapable plate' that you put in boiling water and then bite on it to make it fit the shape of your teeth and mouth. It's really sold to be worn at night, to stop bruxism (teeth grinding) but I find it stops me from chewing my tongue..... I recommend anyone with this horrible habit to use one of these at any times that there's a problem. (Not in front of anyone except family!).
My Dad (a retired Doc), tells me that constant tongue chewing coud easily cause tongue cancer.... so stop it, anyway you can. This has been a habit for me, for 40 years... I think this method (and lots of prayers) will stop me FINALLY.