Picking EVERYWHERE

This sounds disgusting but I pick the skin on my lips, scabs, acne, and even scratch my genitals and smell my fingers compulsively without even realising it. I pick my nose obsessively, cartilage is wearing away in places and I'm scared. Despite all of this I only do this at home and my habit is completely hidden, noone has a clue. I really want to see a doctor about my nose but I use to work at the clinic and everyone will obviously recognise me. But my nose is collapsing as my cartilage melts away. I don't even pick much now but I think the blood supply is going. I can't start a relationship, I daren't go out, and worry my career will be over when my nose completely deforms.