one willing to get up before dawn, wade into a freezing river.... wave a stick for hours on end... tie a really small fly one, with very cold fingers.....to try outsmart a fish with a brain as small as a pea...get outsmarted over and over again.......and then get up the next morning wade into the freezing river,,,,at least our wifes and g/f will know we will never cheat on them,,we are to busy freezing in some riverA determined SOB.
I didn't do a psych rotation in medical school but this answers the op's question accurately.when I was doing my psychiatry rotation in medical school I asked my young psychiatry attending (professor) who is now almost 40 years later the President of the medical school if I had some type of problem because of my possible obsession with fishing the Salmon River. He just smiled and said that it is good to be passionate about something. People who are not passionate about anything are lost souls.
I dont think I was obsessed with fly fishing maybe a bit because of all the stories of Montana from my mentor. In reading Trey Combs book, learning that there is steelhead in the most beautiful part of Minnesota and I caught a wild one after three days of hard fishing and freezing to death, camping in the north woods in the beginning of April. That was trip that changed my life, I truly learned what it took for a fly caught steelhead and I loved it, all of it.
Finally learning spey fishing and hanging out with people that are hardcore as well from the US, Canada and Europe, it has not helped.
In the lost coast film about the area and fish, they describe what happened to people, when people from the east, brought, flies and Atlantic Salmon tactics to the west coast. while I was not into spey yet and young, what they describe as to people obsessed, that was me in 1988 after my first trip.
Even regular fly fishers look at me in disbelief. Four days, yeah, got one tug, yeah, 34 degree water and temps in the teens, snow, occasional dangerous ice flows, yeah. one pull and you lost it, you lost the fish. yeah, well it came off, and you say this was a good time? yeah it was good.
on youtube, there is some guy surfing a ice flow, fly fishing
I hooked my finger recently - very deep - and had to figure out how to get the hook out. Google had a nice video and with a bit of pain, I got the fly out of my thumb. This dry had my blood all over it and I proceeded to use it. Caught a nice brown trout with it.If you cut yourself badly while fishing and your first thought is to rub blood on your fly, it is fair to say have moved over the line from focused to obsessed.