Have you ever had colleagues or friends who consistently put in 12-15 hours of work a day for weeks on end and still not exhibit the faintest signs of mental or physical fatigue? On the other hand, you may also be acquainted with people who behave like zombies after a couple of extra-long working days. The interesting part about this contrasting behaviour, you may have noticed, is that the "fatigue factor" has nothing to do with the age of the concerned person.
Then what's it that makes the former type of people behave like superheroes? Do these guys gulp down some magic potion with breakfast every morning? Do they suffer from a genetic disorder? Or are they just visitors from a different planet?
Fortunately, none of the above.
The answer is fairly simple. The "superheroes" ENJOY their jobs, while the latter ENDURE them!
Do YOU enjoy or endure your job???