Commentaries:
Self-indulgence promotes, among other things, attitudes of fanaticism, false security, presumption, and fun-seeking. Fanaticism is unbridled obsession, and though most do not recognize it as form of self-indulgence, it is a gratification of selfish desire. The apostle Paul says that we should avoid those who are driven by lust and greed and have no self-control.
Martin G. Collins
Overcoming (Part 8): Self-Indulgence