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If we need any further evidence of the difficulties of being human, we need only study the poignant phenomenon that psychologists call dermatillomania, more commonly known as（通俗易懂） skin picking. Those who suffer from this will by definition be at the anxious end of the spectrum. Few days will be free of great worry (只有为数不多的几天是无忧无虑的). Sometimes, it will be a specific concern with a threat that feels like will be the end of us. Sometimes, it might just be a general eeriness (胆怯)and an nameless dread （恐惧）. In response, as we've probably done for years, we'll start to pick. Perhaps, we reach for one of our hands and a very special zone we've almost certainly not told anyone about, a zone of hardened skin made up of extra layers that we begin to press or squeeze at, file down or unsheathe（拔）. Or we go to an area of our face and start to worry away pinching, squeezing, lifting, skewering （用针刺穿）. It might equally or also be a part of our lips we go to or a bit of our ankle. In all cases, the skin buckles（弯曲）, damages, goes sore and on occasion, when we go too far, starts to bleed, perhaps profusely. If someone were to come into the room, they might gasp(震惊地倒吸一口气) though we generally do a good job of covering up the blood once we are done. We know of course we shouldn't be doing any of this but if feels at the time so nice or more accurately irresistible.  Like the only thing that's going to work. Like exactly the action we will be able to deliver relief. What could matter in a context that would be left with a pitted face or a bleeding foot or purple raw （因破皮红且疼的）thumb. It's what we had to do and have been doing, probably for many years. We know we do it but it escapes and resists direct thought. This might be the first time we ever heard anyone else talking about it. Dermatillomania, the psychologists tell us has to do with anxiety. That much is evident. What is distinctive is that how anxiety is being handled. Some will act out （表现）their pain in dramatic noisy ways, screaming, insulting, cursing. Skin-picking is a quieter, more solitary way of trying to come to terms with alarm and self-loathing. （与惊恐和自我厌恶和解）It's predominantly the introverts' disease. The skin picker might well like to scream,  panic loudly, tell someone to go away （让别人滚）, or  collapse in someone else's welcoming arms but their characters have been shaped through aeons of solitude. They have no faith in any possibility of turning towards someone else for help. They feel fundamentally alone. They only had experienced directing anger and sorrow in on themselves. They are taking their pain out on the only character they can reach. Knowing all this helps us to imagine what a cure might look like. For a start, it will involve recognizing the degree of solitude that has inspired this kind of masochism. No one ends up picking their skin raw who had an early consistent experience of tenderness and tuned care（调节适当的）. One does this thing because absolutely no one was around or those who were did a lot of humiliating. It may help to recognize that one is still now terrified pretty much all the time for targets may shift losing one's job, being made fun of, being sexually rejected, ridiculed, but the essential drift is that one is a terror struck person. (如惊弓之鸟)We tend to be only in the position to acknowledge our distress （痛苦、难过）when somebody is around and could understand. When we can passionately realize that picking is about fear and self-disgust, and a legacy of neglect and cruelty, we are in a better position to start to see rather than merely be impelled （被...所驱使）by our pain. We need to find a better way of being worried. We are trying to gain control over a cruel-seeming and cold world but turning our index finger raw or taking a pen knife to our heel isn't where the issue lies. We need to know that this isn't some un-analysable quirk. It's a known and a very  moving problem, one of the many things that sensitive mind will do in response to a lack of love and to a basic fear that had to be born alone. We need to start to pick the real source of agony （极大的痛苦）and leave our innocent and bleeding body in peace.