I am wearing the same pair of shoes that you are and have been for most of my life. Hunting, fishing etc... it didn't matter; If it had anything to do with either of those I went all out. It has been and still is nothing less than a passionate obsession.
10 or so years ago I was told by my mother to "find what you love to do and then find someone who is willing to pay you to do it." After several years, I reached the personal conclusion that there was little to no chance of me winding up on Realtree Monster Bucks or Mossy Oak's Whistling Wings getting paid to hunt. I would never tell anyone to give up on that dream, and neither have I; just decided to take another approach. A "career" approach.
I am and have been for many years just as passionate about conservation as I have been hunting. Im a senior in Auburn about to graduate with a degree in Wildlife Biology. I really want to continue and get a masters thereafter. My point is this. I, like you, have a passion that is unexplainable. And with all honesty, the things I have got to do and experience pursuing this degree have taken me more places and have allowed me to meet more "industry" people than you can imagine. And the thought that in another year or so Ill have a job (if I can find one) that will have me out everyday working with wildlife doing what I love is what I love most.
So as others have suggested, maybe trying to be a true "professional" hunter isn't where its at. Lets be honest most of those guys don't do a whole lot to promote conservation anyways (its all about the money to them). Not always the case but it is the norm. So look for the type of job where you don't have to take off to do what you love. Where doing what you love is part of your job. I know that is what you are trying to do with hunting/guiding. However my point is that there is more than one way to have a job in the outdoors, that will have you in and around all of this stuff that we are all so passionate about. I don't know what your degree is in, but with just about any degree there is a company/agency that employs individuals with those skill sets that is centered in some form or fashion around the hunting/outdoor industry.
Jake