What about the fact that stress is tremendously destructive to our health? It is directly a threat to the survival of both individuals and the societies they live in. If being in an anxious state for extensive periods of time were the most advantageous to survival, then evolution seems not to have noticed it. The structure and functioning of our endocrine system heavily suggests that humans were built for occasional short bursts of high stress, not extended periods of constant high stress (as we have designed society to require of most people).
Sometimes its just good enough to be like cockroaches to survive and succeed.
I ask because I can recall several times in both school and career when I was much more productive because I had to be due to time constraints than when I had ample free time and was not as burdened. I'm wondering if you are describing that as well.
Would you rather be happy or productive?
Can an unhappy person be truly productive, not just doing some thing mechanically and painfully ?
Unfortunately, I can report that I have done all of my best work in my career when I was extraordinarily anxious, feeling like I was holding to the side of the cliff with just my fingernails. Whenever things have started to get too comfortable, I found that hubris has disrupted my successes.
It's a sad thought, but I see absolutely no reason to believe that the natural state of humanity is to be happy (or, more specifically, content). The Environment of Evolutionary Adaptiveness [0] seems like a pretty harsh place, and that's also where I've found most brains function best.
[0] http://en.wikipedia.org/wiki/Evolutionary_psychology#Environ...