New Here and Embarrassed

Hello. I came across this site while searching for answers about picking. I honestly thought I was alone in this habit....and crazy! I started picking almost 12 years ago...I'm now almost 35. The main places I pick are the places I can cover up: my breasts, chest, belly, back, shoulders, and buttocks. Mostly my entire chest area and belly. I'm relieved to know that I'm not the only one who does this. I just wish I knew WHY I do this to myself. I've completely ruined my body; I'm always covered in scabs, scars, and open wounds.I'm embarrassed and ashamed of myself. I sit on the toilet and pick or when I'm laying in bed. If my kids should happen to see a scab, I'll say that my eczema is acting up...which I DO have, but only a minor case. I constantly cover myself up and leave as much clothing on as possible when I'm intimate with my SO. I hope you all can help me thru this and give me some insight as to why I do this to myself. Thanks for reading.