Do you think we should live like we're dying?

Someone recently asked me this question and it got me thinking. I have wasted so many days just lazing about and doing nothing useful with my time. My dad always pushes me to make the most out of my day so I can feel like I have achieved something at the end of the day. Now , as a 16 year old, I don't know where I'm going with my life or what I want to do or what job I should take up. So many adults I know STILL don't know what they're doing. Anyway , my point is live your life to the full , because life is just too damn short.