Live today like you were just 90 years old and made a wish to experience youth one last time. Live today for them. Would they be preoccupied? Would they focus on their imperfections? Would they be stuck in the past or dreaming of the future? No, probably not. I think they'd dance because their body is healthy enough to dance, run just because they can, tell their loved ones how much they mean to them because they still have time to, feel the freshness of the air just to remember they're alive.