millie210 - Field service also makes you feel euphoric when you are done.
Yep. Totally agree.
I would add one thing:
I am very much an introvert. And, I remember when I was doing FS that my anxiety level was so high from the minute I went to the first door that by the time the day was over I felt "good". I misinterpreted my ebbing feelings of anxiety at the end of the day as "happiness". It was actually, "relief". Kinda like holding on to a rubber ball tightly all day and you are finally able to let it go. It feels wonderful but only because you had held tension for hours.