Net fulfillment over net worth

Gina Trapani The most common piece of personal finance advice out there is to &ldquo;know your net worth&rdquo;&mdash;the number that represents your assets minus your liabilities. As a money nerd supporting a family in an expensive city, for years I viewed that number as a measure of how well we were doing. It&rsquo;s easy to make a number more important than it is. When the number went up, I…