You spend the bulk of your adult life working. Half of your waking hours are spent at work. Your commute back and forth eats up an average of nearly one hour of your day. And when you get home, the work doesn't always stop: 81 percent of American workers pour in extra effort off the clock. Given the extent of that enormous time-suck, it's a shame that so few of us actually like our jobs. More than half of us are checked out.
But we all have friends who have one of those jobs. Somehow, they actually like their careers. What are the things that separate the great gigs from the dead-end drudgery that smothers so many of us?