I've sat with more than a few men whose marriages were on the rocks. In each case, it was normal to hear complaints about the wife. There was typically a laundry list of reasons why she was insufferable, demanding, cold, or unreasonable. Without question, the husband had worked hard and done all he could, but she just wouldn't change. And sometimes this was actually the truth. But oftentimes, the husband bore at least some, if not a significant amount, of the responsibility. You see, the biggest enemies of marriage don't exist outside of your control. Typically, they either come from within you or from sources you have some measure of control over. In fact, many times the real reason why our marriages are unhealthy is that we aren't willing to take a long, hard look in the mirror. And of course, working on yourself is hard. But if you want your relationship to thrive, you need to start by honestly addressing 5 of your marriage's biggest enemies. 1. Se...