I've been doing this as long as I remember. When I'm bored, when I'm stressed, when my hands just have nothing better to do at the time... I'll just start running my hands over my skin liking for something to pick at. I've tried to stop so many times and I was actually successful once, but then I started again. Over time I moved the main area or picking from my exposed arms and face to more covered areas - mostly my sholders and upper arms, but I'll still pick at my face occasionally, especially when I'm stressed. I bite my lips too, sometimes to the point where they bleed. In high school and jr. High I had sores everywhere, covering my arms and face. I was sent to the school nurse a few times because my teachers thought I was sick. I avoid situations where I have to take be shirtless in front of others because of it. Every time I catch myself picking I feel terrible; I see it as a day's worth of progress lost, a day's worth of my skin healing. But before I know it, my hands are at it again.