“Phlebotomy. Everyone thinks they can find a vein and put a needle in it, but in my 15 years of experience, you either have it or you don’t. I’ve trained hundreds of people over the years, and only a handful would I call good — and even fewer of them would I consider to call when someone comes in and says nobody can ever get their blood. At least three times a day, someone tells me they can’t find a vein on someone and I put a tourniquet on their arm and feel something in less than three seconds.”

Source: https://www.buzzfeed.com/larryfitzmaurice/reddit-shares-jobs-attract-wrong-people