My Poor Lips

I'm 26 and I've been picking my lips since I was able to. I don't know what started it. I think I used to think that was how older women got their lips so red (too young to understand the term LIPSTICK, I was). Now I'm 26 and I still can't stop. I hate it. My mom and step dad both scold me and tell me to stop, like it's something I do voluntarily at this point. Maybe it is voluntary, as in I know I'm doing it and shouldn't be, but it's not as easy as just saying STOP. All she does is rail that I'm 26, I shouldn't be picking my lips, that's a habit for babies, as she says. It doesn't help to hear constantly that my lip picking is a symptom of how immature I am. She acts like I WANT to pick my lips. I don't. I want to stop and every time I think I got a handle on it, the cycle starts all over. It normally starts again when she's being particularly mean to me. I'm glad I'm not the only one with this problem and that it actually has a medical name. Now I need to figure out how to stop and how to shut her the hell up.