Most of John Piper's works can become a bit 'heady' for me, but I really enjoyed reading his book "Don't Waste Your Life."
Besides the obvious inclusion that anything done for Christ's glory will last, it was also a sober reminder to focus on the important and get rid of the things that just don't matter much. That all of life is for the glory of God is something that's easy to remember when you're in the midst of just doing life. So this book came at a welcomed time and with some welcomed insights. Thanks Piper for keepin' it real.