My mom does it and I picked it up a long time ago. It's a nervous tic that I do when I'm stressed/anxious. I don't always do it, but lately I have been a lot. I'll chew my cheeks and pull the skin off my lips until they're bleeding and even then I can't stop. It's gotten to the point where I can't feel/hear my teeth chipping by grinding them together trying to chew on my lips/cheeks. I hate it, but I can't stop. I chew a lot of gum and that helps a bit, but I still do it whenever I don't have gum. I've been meaning to get a mouthguard, but I don't want to have to wear it all the time. Has anyone else dealt with this, does anyone have any advice or products that can curb what feels like an addiction at this point?