There's a lot more to being wealthy than you might think, which is why wealthy people have a lot of things in common besides money. They've developed good money habits, and that's the most critical part of financial success. Why? Because it's a lot easier to spend money than it is to make it, and as I've often said, it doesn't matter how much money you make -- if you're spending out of control, you'll never be rich. What habits keep the wealthy from getting into trouble? Here are the big six.