Why: the steadiness by which one holds fast to duty, desire, and wealth, desiring the fruit, out of attachment, is of the nature of passion, describing a more effortful, grasping kind of steadiness, still real persistence, but driven by attachment to specific outcomes rather than clear, calm consistency.

In life: persistence driven by anxious attachment to a specific outcome tends to feel much more exhausting to sustain than persistence coming from calm, clear commitment, even though both can look like the same determined effort from outside.

Teaching: check whether your own current persistence toward a goal is coming from anxious attachment to a specific outcome or calmer, clearer commitment, the exhaustion level of sustaining the effort is often the clearest tell for which one is actually driving it.