Better yet: a motto for one’s life as opposed to just for the day.
And, yes, it would work better still if it were in the command form: Viva!
Maybe, then, what this is actually saying is, “She lives.” Perhaps the woman is a secret agent? A robot? An extraterrestrial? A Gucci model?
That’s the confusion you get, I guess, when you try to build a composition from a bus stop poster ad.