I doubt you should ever use Edison or Einstein to ever refer to the average person. Let alone put yourself in the same camp, you'll probably do yourself mental harm via exhaustion. Fine if you have abnormal drive and intelligence go for it.
But chances are you are an average person and need to obey the rules of what makes average people happy. Or you won't be happy. Maybe you'll throw yourself at your work in the hope of finding happiness.. something I'll admit to doing myself.. chasing dreams of a better life.
Theres plenty of research that states the exact opposite of what you are saying, enough that France even had laws banning working over 35 hours (and its 48 hours for the rest of Europe). http://en.wikipedia.org/wiki/Working_time#Western_Europe
What works for some people doesn't work for others. I remember listening to my friend talk about working in Japan during the late 80's early 90's and described the people he worked with as having an ingrained apathy towards the long work day, and most just mucked around all day. Took 2 hours to even start work, the work force was extremely unproductive for the hours they where doing. I'm sure theres different stories in different industries but thats a story I take as 100% as the person isn't known for being a liar or exaggerator.
Just because you can make people work long hours doesn't mean things get better, it often means things get worse. And thats the moral of his story about Japan.
The stories of how industrious and loyal they are... just stories... they are just people like everyone else. And as a majority they'd rather be at home with there families and friends than at work making someone else rich.