Not sure if this is a "dark" secret or not, but here I go:
I'm a firefighter/paramedic, and I take my job really personal sometimes. I let myself become emotionally involved with my patients. For example, we had a little girl that was hit by a car and was killed. We tried to save her, but there was nothing we could do. I know that, and even if we could have saved her body, she would have been brain dead. I think of that girl every day. I see her pale, bloody and shattered body every time I close my eyes. Most days I am okay, but I think of her all the time, and sometimes I get really depressed about it.
I have dealt with plenty of people that have died; murder, suicide, natural death, accidents, most never bother me. That little girl does though. I have to drive by the accident scene every day. I can still see where her blood was, as I knelled in it performing CPR, even though it was washed away with a fire hose that day. I have dreams about her.
This is mostly a secret because firefighters and paramedics are suppose to be able to handle this type of stuff. I have almost died a dozen times or more in my job, that doesn't bother me. But that little girl always will I think.
I was able to do my job that day, no problem. I did everything I could, everything I should have. I can shut off that part of my humanity during the call and do what needs to be done, but after the call, like this call, it turned back on hard. And I am somewhat disturbed by the way I can do that.