Pick Your North Star Metric

My product: [product] built for [target audience] to solve [problem]
Metrics I currently track: [e.g. DAU, MRR, signups]

Help me choose a single North Star Metric (NSM) — the one number that best reflects the value my product delivers.

Suggest 3-5 candidates and evaluate each against these criteria:

- **Reflects user value directly**: Does it measure the moment a user gets value — not just revenue or pageviews?
- **Leading vs. lagging**: Does it predict future growth, or only confirm past performance?
- **Actionable by the whole team**: Can engineering, sales, and support all influence this number?
- **Hard to game**: Is it difficult to inflate without actually improving the product?

Recommend one NSM, explain why it wins over the others, and describe how to track it weekly.