How can istop biting my lips?

What I say is you can put not so good tasting lip balm, or moisturizer on your lips, maybe lotion. You can also get some Canker Sore liquid to smear on the inside of your mouth and on your lips. it will numb the area so you won't be able to feel the cuts and play around with it. Yet this only lasts about five minutes from what I know, so you might have to put it on constantly. If you keep biting your lips, you might get lip cancer. Which is hard to cure. hope this helped!