Why: that happiness which deludes the self both at the beginning and at the end, arising from sleep, laziness, and negligence, is said to be of ignorance, describing the dullest kind of happiness, one that's actually confusing or harmful throughout, not just at one end or the other.

In life: some habits marketed to you as relaxing or pleasurable, excessive avoidance, numbing distraction, actually produce a kind of confused, low-grade dissatisfaction the entire time, not real happiness at either end of the experience.

Teaching: honestly examine whether a habit you've been treating as relaxation is actually producing this dull, confused quality throughout the experience rather than genuine satisfaction, that distinction matters for deciding whether to keep relying on it.