We often like to think that, through sheer grinding, grit, and determination, our efforts will be rewarded with greater compensation and career progression. After all, that's what we've always been led to believe by schooling and popular culture. But what if you make yourself so irreplaceable that your bosses refuse—or simply can't afford—to promote you? Being too high of a performing productive worker lends itself to some complications. To replace you, the company may have to hire two or three…