Fabric rubbing obsession

So ever since I can remember I've had this weird habit. When I was little I had a blanket for the longest time. It was falling apart a little bit and had places on it almost like those ripped places on pants that you can buy from the store. I've always had another habit of mine, which I'm guessing is a form of Dermatillomania. I basically pick at the sides of my fingers until they bleed or leave a somewhat "serrated" skin edge. Anyways, I would use that skin ridge as a child to rub against my falling-apart blanket so the little threads and tiny tiny "fluffies" would brush against it and almost "stick". I would also grind my teeth, which is another horrible habit I can't seem to stop. It's somewhat calming, and I do it to this day when I find a certain fabric that I like doing it to. If I'm not rubbing my fingers against a blanket or fuzzy t-shirt, I'm constantly picking at the skin around my fingers until they bleed everywhere. I haven't found anyone who has this same habit, so I was hoping I could tell this to some people. I've never told anyone before in fear they would make fun of me.