Indulgence can be indulgence in anything. You could be indulging in your laziness, indulging in your depression, your fear, your paranoia, indulging in being busy, indulging in attacking yourself or other people, indulging in self-criticism and criticizing other people, indulging in avoiding things, indulging in postponing things, indulging in gossip. Any attitude, feeling, or unconscious tendency of your personality can be used as an indulgence. That is one of the qualities of the personality: to keep on indulging. Even when you know it really is just your personality, even when you know it’s something you picked up along the way and serves no good purpose, you continue doing it. You know, for instance, that your fear has no foundation in reality, but the next time a situation presents itself, you act according to that fear. You act in the same way, following the same pattern. – Diamond Heart Book One: Elements of the Real in Man, ch. 15
What indulgence amounts to is that you’re not taking responsibility for the regulation of your own system. You expect somebody else, or time, or God, or whatever, to do it for you. It is the same attitude as the infant who does not know how to regulate itself and depends on something external—the mother in this case—to clean it and feed it, to release its tension, comfort it, and all that. For a baby, it is not an indulgence because a baby cannot do it for himself. The mother has to do it. But being an adult means taking care of yourself, doing what you know is best for your system. Indulgence covers up this deficiency of self-regulation, including autonomic regulation. – Diamond Heart Book One: Elements of the Real in Man, Ch. 15