I learned in RVN that mental toughness and a positive attitude was the difference between warriors and cannon fodder. Lots of PT studs folded in the heat and strain of humping a load in the jungle while expecting to get whacked. I saw some normal folks suck it up and hack it. A few liked it and became warriors.
Learning to laugh while suffering works for many things. Hunting hard in the mountains for > than 3 continuous days is painful and only worth the effort for some. Good physical conditioning helps increase the fun factor more than will a .5 moa rifle.
mike r