For many Americans, work can feel like a hamster wheel. No matter how hard they run, it never feels like enough. Americans, on average, say they would need $520,000 a year to feel rich. And the more people earn, the more they say they need to feel comfortable.Americans making under $50,000 felt they needed $157,000 a year to feel comfortable. Those making $100,000 or more said they would need $246,000. When I was in middle school, a song came out called "Mo Money Mo Problems," and I think that that's true.Y ...