Sometimes I'm annoyed doing several tasks in my job, because in many situations I have to work under a big preassure. I'm a database administrator, and when there is a problem or an issue in the system, and the service goes down, all phones start to ring, people start to shouting you... and you know that each second the system is down, means that there is a company loosing money. At this point, you feel stress, you know that you must be very sure about what you are doing, and you can't make any mistake. You should restore the service as soon as posible.
Talking with other people, for example, my sister is a dentist, you see these things with another view. Sometimes she tells me that last morning there was a patient in the clinic, whit a problem in a cheecktoot, and she had to pull it out. The cheecktoot didn't want to go out, and during an hour, among blood, patient's pain, and suffering, she managed to pull it out.
I don't want to imagine how must a fireman or a policeman be feeling before entering a house on fire or trying to release hostages in a supermarket. They are exposing their lives, and other people lives depend on them.
Thank you for your correction :)