Magasanguis -

No, as you see, you're not the only one. I thought I was the only one who pulled eyelashes, though. I can't remember how it started, maybe when I started plucking my eyebrows (weirdly, I don't overpluck my eyebrows), sometime in my late teens? I'm also really nearsighted, so I can actually see my eyelashes and the roots close-up in a mirror, and have been known to actually go at specific ones (according to my own weird logic) with tweezers. (Hope that wasn't too cringe-inducing for some folks.) There have been periods when I had virtually no eyelashes left... they're a real pain to grow back.

Never brought it up in therapy, either. There's definitely a stress-related component involved (I also used to bite my fingernails a lot, less so now), and it does have a kind of soothing effect.

Never pulled out my head hair to the extent of it missing in spots, but I did have a habit of picking and tearing at my split ends, especially when I wore glasses. Don't do that much any more, either, since I wear contacts and try to keep my hair trimmed and in better condition.

I'm afraid I don't really have much in the way of advice (though if you have the tweezer habit, you can freeze them in a container of water so as to avoid the impulse), but wanted to join in and let you know you're definitely not alone.

(Now, if I could also stop smoking...)