Rule #1 of financial freedom is spending less than you earn. If you can't do that, you'll never be financially successful no matter how hard you work, how many hours you put in, how many promotions you receive, or how much money you make. It's a simple rule, and most would consider it common sense. But, the U.S. has a negative savings rate, meaning this common sense rule may not be so common place. I recently saw a statistic that claimed that about 43% of American families spend more than th...