Giving is a reward in itself.

So,It's necessary for us to prepare ourselves well for the future to come. having a view on those great men in the history of hunman being, they all made full use of their youth time to do things that are useful to society, to the whole mankind, and as a consequence ,they are remembered by later generations, admired by everyone. so do something in the time of young, although you may not get achievements as these greatmen did ,though not for the whole world, just for youeself, for those around!