Our use of time

As i get older (I'm middle age now), the concept of limited time keeps coming back to me.  As mortal we only have so much time, and it seems like we have so much to do.  One very important thing to learn is analyzing and prioritizing (I guess that's two things).  We have to question the true value of a thing or activity by considering it in light of eternity.  A week from now, a month from now, a year from now, on the new earth, will this thing still be important? If not, we shouldn't necessarily not do it, but at least consider it and give serious thought to something else that is truly important. 
This is not about things that are sinful or not, that's pretty obvious, but the multitude of inconsequential things in our life.
How are we using our time? Do our actions exhibit a love for God and neighbor, or are they strictly self centered? Do they lead to a fruitful positive end, or are they disposable, merely forgotten in a week?
In general, this seems to fall into the typical theme for me.  Giving things done thought and acting on the results.