I actually kind of got my motto from a comic book I like to read called "Calvin and Hobbes". In it, this girl named Susie tell Calvin, "If life gives you a lemon, make lemonaid". Then Calvin says "I say, if life gives you a lemon, throw that lemon right back and add a few of your own."
I just took what he said and changed it a little more to my liking.
My other motto, "Fear not death, only the process of dying", I did make up myself, based on my own beliefs.