Keep your shoulder to the wheel, keep your eye on the ball, keep your nose to the grindstone

The Great Divergence:  Trying to understand income inequality, the most profound change in American society in your lifetime. (1) - By Timothy Noah - Slate Magazine

In a survey of 27 nations conducted from 1998 to 2001, the country where the highest proportion agreed with the statement "people are rewarded for intelligence and skill" was, of course, the United States. (69 percent). But when it comes to real as opposed to imagined social mobility, surveys find less in the United States than in much of (what we consider) the class-bound Old World. France, Germany, Sweden, Denmark, Spain—not to mention some newer nations like Canada and Australia—are all places where your chances of rising from the bottom are better than they are in the land of Horatio Alger's Ragged Dick.