the unreturning time that passed

today i stumble upon an arabic saying that goes :

ألا ليت الشّباب يعود يوماً     فأخبره بما فعل المشيب

more or less it mean "if Teen Age' can return (to me) for one day #
So I can tell (complain to) him ('Teen Age') about what 'Old Age' has done (to me)"

the benefits that we can gain is to remind us that what ever the time we has now will never return to us if we forsaken it,waste it or fill it with unnecessary things,it will never come to us the same opportunity to correct it or to undo the things we did for time keep ticking away never stop never turning back...and so should we,think and plan ahead on what time left we has to spare for our future...yet not for the desire to achieve all the things we want rather the things we need to do,realizing that what we want may change from time to time yet what we need remains as it is...may it be more than just word in our daily life...