As someone who was once married and now isn't, I can say that even though I believe there was nothing that could have possibly saved my former marriage, I still think there are things I learned about marriage that I will carry with me to the next relationship. What good is life if you can't learn lessons from it? Well, my marriage taught me a lot about me, a lot about what I want from someone, and a lot about what I need from someone (and have to give) in order to have a happy marriage the next go-round. Here are 10 marriage tips from an ex-spouse who has been there and done that.