a guy who's spending a lot of time alone subjected to harsh climate, dangerous animals who is forced to be self-reliant when it comes to mental or physical ailm

a guy who's spending a lot of time alone subjected to harsh climate, dangerous animals who is forced to be self-reliant when it comes to mental or physical ailments or crime will either break or become an adventurer. i think it might be argued that your idea of what an adventurer has to look like is coined by hollywood such that it has to be a guy who does all sorts of crazy things - which a simple historic cowboy didn't do of course - while otoh this mundane life of a cowboy was by all means pretty adventurous at least by today's standards and that on a daily basis.