I Iove mottos, especially Latin ones. This fascination began, I think, when I first heard E Pluribus Unum. Ever since that day back in elementary school, I have longed for a family crest with a Latin motto. The other day I was reading the Latin Phrase page at Wikipedia (everyone wastes time at Wiki, right?), when I found Semper ad meliora - Always Towards Better Things. As I'm always trying to improve myself and learn more, I thought this would be a fitting personal motto. It can't be our family motto, though, as it turns out this family I married into already has a family crest and a motto: In Domino spes mea - My hope is in the Lord.
By the way, if you're interested in creating your own family crest, try here or here.