Before any dashboard, agree on language rooted in human outcomes: comprehension, usefulness, calm, and confidence. Focus is not fixation or surveillance; it is the feeling of staying with something meaningful. Describe success as fewer confused clicks, smoother reading flow, and timely completion—standards that reflect care, not control, and translate into respectful, measurable signals.
List your learning questions, then pair each with the smallest possible proxy. If clarity matters, track completed sections rather than every movement. If usefulness matters, ask a single voluntary rating rather than logging identities. Every metric earns its place by demonstrating necessity, proportionality, and a plan for aggregation that never becomes personal profiling.
Create guardrails first: short retention windows, on-device computations where feasible, and immediate aggregation that erases granular trails. Automate deletion schedules, publish them in plain language, and rehearse the process quarterly. Boundaries make tradeoffs explicit, prevent data creep, and signal that insight has an expiration date aligned with genuine value, not endless curiosity.