Living in a smaller home isn’t just a smart financial decision. It can improve your quality of life in so many ways. It makes life simpler, less stressful, and more enjoyable. And living small can make you richer, healthier, and happier, too! American houses have grown far too big. The average size of new homes built in the United States grew 62 percent from 1,660 square feet in 1973 to 2,687 square feet in 2015, an increase of 1,027 square feet, according to the U.S. Census Bureau. Chances are, you are currently living in a big house, too, and it may be causing you more stress than you realize. If your house…