Here are some books, articles and shows that I have read (or watched) that helped in my thought processes on entitlement. This is not a comprehensive list, but it highlights the main ones. I will keep adding to this list as I come across more material (or remember the ones I forgot)! 

A Nation of Wimps: The High Cost of Invasive Parenting (Hara Estroff Marano)
Affluenza: The All-Consuming Epidemics (DeGraff, Wann, Naylor)
Generation Me (Jean M. Twenge)
The Price of Privilege (Madeline Levine)
Character Counts (Os Guiness)
How TV Ruined Your Life (Charlie Brooker)
The Entitlement-Free Child (Karen Deerwester)
Money, Possessions and Eternity (Randy Alcorn)
Seeing Through Cynicism (Dick Keyes)
The Paradox of Choice, Why More Is Less (Barry Schwartz)
Scientific American, “Can Money Buy Happiness”, August 10, 2010
Psychological Science “Money Giveth, Money Taketh Away: The Dual Effect of Wealth on Happiness” May 2010
The Happy Movie (2011 Film)