Why do I (33M) do this?

I’ve been pulling out and chewing my eyebrows, eyelashes, chewing my beard, chewing my arm hair, biting my nails and any loose skin around them for as long as I can remember, and I have no idea why. I want to stop but it doesn’t last any more than a few days. It’s not really noticeable apart from my nails which look terrible but I hate doing it, anyone know of any possible deep rooted reasons there are for this?