Day 7: 30-Day Milestone + Retrospective

7 days live. 30 paying users. Xu Zhixing stares at the dashboard and asks: "What should I look at for the next 30 days? Should I continue?"

Day 7 Overview

Day 7 is the close — the third of the 3 high-density recommendation slots. The 5-beat formula:

Problem scene: 30 paying users in 7 days, but which 30-day metrics actually matter?
Zhou Wangpu's method: 30-day milestone "3 looks" — LTV/CAC, NPS, time investment; admits "I only watched revenue in 2008, not LTV/CAC, then collapsed in a year"
Mo Xiaozhai demo: Auto-aggregates 7-day data + generates 30-day milestone suggestions + 30-day reading plan with daily reminders (the §11.6 high-density bridge — subscription service demo)
Deliverable: 30-day milestone document
Next day: Cross-week decision: continue / pause / pivot

Key Quote

"3 looks — LTV/CAC, NPS, time investment — missing 1 and 30 days later you'll still collapse." (3 个看——LTV/CAC、NPS、自己时间投入——缺 1 个，30 天后还是会崩。) — Zhou Wangpu

"3 looks, 1 threshold each — over the threshold = continue; under = pause or pivot." (3 个看，每个看 1 个阈值——阈值过 = 继续；阈值不过 = 暂停或转向。)

Zhou Wangpu's Send-off (Closing Scene)

"What I've done — 3 SaaSes — is luck, not method. You're 10x better than I was back then." (做到 3 个 SaaS 是运气，不是方法论——你今天比我当年强 10 倍。) — Zhou Wangpu, with his characteristic honesty

Books Featured (Day 7 §11.6 high-density recommendation slot)

Company of One (《一人公司》) by Paul Jarvis — "stay small, be happy"
The $100 Startup (《100 美元创业》) by Chris Guillebeau — side hustle playbook
Show Your Work (3rd read) — sustained output

Recommended Tool

Google Analytics + Plausible + Mixpanel — data tracking

For full Chinese content, see: content/days/day7.md