"The disciplined life has more power of fresh enjoyment than is given to the unrestrained."--Charlotte Mason
Amy Dacyzyn once wrote an article about her kids and ice cream cones. She said that if kids get an ice cream every time the family goes to the store, they soon come to view ice cream cones as commonplace, and desire something more. Mrs. Dacyzyn saw that as a signal to stop providing ice creams until they were appreciated again, rather than upping the ante to something more.
This principle can apply to more than just treats. Miss Mason wrote the above quote in a chapter on developing study habits. We can also apply it to activities, socializing, vegging out.