In the modern context, we have many things to keep ourselves entertained and motivated to do work - music, videos, movies, games, magazines etc. 

According to [1 Corinthians 10:31 KJV](http://www.biblegateway.com/passage/?search=1%20Corinthians%2010:31&version=KJV)

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> Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God.
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It is clear that in whatever we do we will do it for the glory of God. 

However I really wonder how does gaming, watching video and having self-entertainment would do to glorify God.