...Self-indulgence tends to suppress gratitude; self-discipline tends to generate it. That is why gluttony is a deadly sin: oddly, it is an appetite suppressant. The reason is that a person's appetites are linked: full stomachs and jaded palates take the edge from our hunger and thirst for justice. And they spoil the appetite for God" (p. 35)*.
So, what are you glutting yourself on today?
* Plantinga, C. (1995). Not the way it's supposed to be: A breviary of sin. Grand Rapids, MI: Eerdman's