What is your favorite motto?

I've always found it hard to answer this particular question? Why? I know several, but I can't really say that I believe in a particular motto, enough so that I would always try to abide by it. That's why whenever this question pops up in a slumbook that my friend wants me to answer, I always feel that I'm giving a halfhearted answer by writing down whatever motto that comes to my mind at that moment. Haha.

Am I the only one who feels this way? I don't know if I'm just analyzing things too much or if it's something that everyone else thinks about too. Any thoughts on this? :)