Precious time...

I'm in an introspective mood so bear with me. If all goes well, I'm about half way home. 40 years of time behind me and, based upon life expectancy in the USA, perhaps that much ahead. What should we do with all that time? Is time just directionless and vacant, waiting to be filled spontaneously or is some planning required? Can one have meaninful activities and personal accomplishments without planning? Is it important to have those things or is it OK just to fill time without thinking ahead? I wonder if I could look back with as much pleasure if none of it had been planned (and, of course, not all of it was).

This is one of the bible verses having to do with time..

Ecc. 3:1 "There is an appointed time for everything. And there is a time for every event under heaven.'

Do you think there is an appointed time for everything by God?

I do know that there is nothing in this world perpetual. What you do not experience today, you may experience tomorrow or you never experience it.

Perhaps God, understanding the inability of men to attain, by philosophic inquiry, to a full comprehension of his works and ways, has wisely set the world in their heart; that is, has occupied them to a large extent with its cares and labors, as a discipline that is good in its place. Their wisdom and happiness lie, then, not in vain endeavors to comprehend what is incomprehensible, but rather in submitting themselves in faith and patience and planning to the appointments of their
heavenly Father.

I suspect it is never out of season to accept God's gifts joyfully and use them wisely and do good with them for self and others.

Then, is it a sin to 'waste' time? Precious time? Or can time be wasted?