Anyone can become rich if they know the right steps to take. But if you possess a certain set of characteristics, you may be more likely to become wealthy, according to Sarah Stanley Fallaw, director of research for the Affluent Market Institute. She co-authored “The Next Millionaire Next Door: Enduring Strategies for Building Wealth,” in which she surveyed more than 600 millionaires in America. To identify characteristics most predictive of net worth, Stanley Fallaw conducted two studies that included a group of individuals with a net worth ranging from $100,000 to $1 million and a group of high- and ultra-high-net-worth...