We all know we could die tomorrow and nothing is guaranteed, but it's hard to really live that way. I think if you were given a specific time, like one month or one year, you would really live every moment as if it were your last. You would do all the things you have always wanted to but never had the courage to actually do. All the things you kept putting off for "later". If you didn't know that later would ever come, how would you live?
Take every chance you have because you never really know.