I have a lifelong habit of biting my lips when under stress. I have tried chewing sugarfree gum, cough drops/mints, being conscious of it and thinking of something pleasant... There is certainly a lot of stress when caring for a loved one, and my habit is actually causing problems with my teeth. My dentist says, "Don't do that." Has anyone had this habit and broken it? It is not only unattractive, but it makes my lips constantly sore. There are certainly worse and more serious habits (addictions), but I wondered if anyone here has had this problem.