Brief Time On Earth

If I knew I only had a few days to live, I would not do any of my homework and I would just have fun with my friends 24/7. I hate it when people tell me to "live as if today is your last day" because then I would be completely unprepared for my future. I mean, I can't just go and be irresponsible every day and always choose family and friends over work. I know, there is a balance, but I just think sometimes that saying is a little silly.