My fingernails and I need some help

I'm pretty bored and this is on my mind right now, so I figured I'd see if anyone here has some good advice for this shit that I'm about to elaborate on.

So I pick and bite at my fingernails an awful lot. Always have, too. At this point it's developed into a really bad habit that I just can't help myself from doing. My fingernails are an absolute mess as a result, to the point where I feel really self conscious over it. I look at my nails and realize just how obvious it is that I pick at them. They definitely aren't nearly as bad as some of the extreme examples you could probably find online, but they still look pretty fucked up.

I just can't help it, though. Sometimes I'll start doing it without even realizing and before I know it, I've butchered the everloving fuck out of my pinky fingernail. Part of it is definitely anxiety, because I really go to town on them when I'm feeling super anxious, but I do it other times too. Even when I'm bored at work I sometimes do it. And the worst part about it? Most of the time, I actually like what it feels like. I think it feels good, to a certain degree.

The only kind of 'help' I've looked into is googling things by myself, and the best advice I've gotten online is that I need to keep my hands busy when I find myself feeling restless. I've read suggestions like playing with my hair, or twirling a pen around, but neither of those really cut it for me. I still fucking pick at my fingernails after a while.

Any advice?