In April 2017, Randy Alcorn taught a course at Veritas Evangelical Seminary on the subject of happiness. In this clip, he talks about happiness and unbelievers. For more information, see Randy's book Happiness. 

In his excellent book Bible Doctrine, Wayne Grudem says, “Common grace is the grace of God by which he gives people innumerable blessings that are not part of salvation. The word common here means something that is common to all people and is not restricted to believers or to the elect only.” 

If you haven’t seen this video, it’ll make your day. I just watched it again as I took a brief break from final revisions on my book. Think of it as God’s common grace at work in this world.