One of the most profound books I have read, and continue to read, and often quote from is J.I.Packer's Rediscovering Holiness. I first read the book in December 1992, and even today read and quote from this book.
I believe today we are current losing the biblical truth about holiness. Today, we are ever losing the reality of biblical truth. There was a time when all Christians put great emphasis on the reality of God's call to Holiness.
I am amaze today to see many who say they are "Christians" yet their lives and talk and behavior often don't picture or mirror the reality of Christ's holiness in their live.
Take time today to ask God to get your attention off self and others, and back on Christ.