I believe in the institution of marriage. Of course being a Mormon, we believe in eternity rather than just till death do us part. If you really try hard, if you make it work, it's blissful. But I also know a marriage that isn't working can be painful.
You have to believe in yourself, otherwise you can't do it. If you don't believe in yourself, how do expect anyone else to? Because ultimately, you're the one who has to do it.