Another Rants about life

Well, this day, i spent myself thinking something over and over again, and i think i couldn’t really find out the answer. I’ve been asking myself “Why do I even have to try hard?” I mean, I know, for living, but something inside me told me, that what am I living for? And i got “To die.” (Not to be desperate, but i think it’s quite true, since we’re fated to die, in the future, what’s the different between now, and 30 years ahead, except 30 years of hard works?) And if I am destined to die, why do I have to try hard? I won’t bring anything into my grave anyway. Not Fame, nor Fortune, nothing just nothing. Probably someone will know our existence, but it will be gone over time, anyway. So, back to the main question, why should we overdo things in life?