Yep. It's when you get just as much, or more, enjoyment in helping others catch fish as catching one yourself.
That's what I liked about guiding. Got to where I'd just about as soon row the boat and put people on fish as catch one myself. "Just about."
On the other hand, after a few days of 32 degree mixed rain and snow going down the back of my neck, the pluses of a desk job become a bit ... clearer.
Tom