Why do I rip my eyelashes and hair out

I've been doing this for awhile but recently it's been getting worse, I can't help but pick at my hair and eyelashes, my lashes basically don't even exist and i fucking hate it, it makes me feel yuck and I want to know how to just cut back on the urge to pull my hair out, it's like a habit I'm also a nail biter cause of stress and I'd love to know how to stop biting your nails because once again it's fucking Yuck