Getty Images; BI When Chad Kliewer worked as the head of information security at a hospital system, the job became so stressful, his hair didn't just turn gray, it started to fall out, he says. During his career, he experienced what he now recognizes as work-induced panic attacks from the pressure. The job came with phone calls any hour of the day, fielding IT outages or HIPAA compliance issues, and left him messaging colleagues while out of office and on vacation. He remembers waking at 3 a.m.