manager-first-90-days

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SKILL.md

Manager First 90 Days Skill

New managers fail in two symmetrical ways: moving too fast (reorganizing by week 3 on pattern-matching from their last job) and moving too slow (still "just listening" at day 80 while the team concludes nobody's driving). The 90 days have a shape — listen (0–30), decide (30–60), move (60–90) — and the discipline is doing each phase's work in its phase: no irreversible changes while listening, no more listening once it's time to call things. This skill builds that plan, tuned to the situation they're actually walking into.

What This Skill Produces

  • The phased plan — 30/60/90 with each phase's job, its deliverable, and its forbidden moves
  • The listening tour kit — 1:1 question set that surfaces reality instead of pleasantries, plus stakeholder-map interviews beyond the team
  • The assessment framework — reading people, processes, and problems without the early-judgment traps
  • The artifacts — day-one intro message, the week-6 "what I've heard and what we'll do" note, and the 90-day review against the plan

Required Inputs

Ask for these if not provided:

  • The situation — first-time manager or experienced-but-new-team? Internal promotion (now managing former peers — its own minefield) or external hire?
  • The team's state as advertised — size, tenure mix, why the role was open (predecessor promoted, quit, fired — each leaves different residue), known fires
  • The mandate — hired to fix, to grow, or to not-break? What did their boss say success at 90 days looks like? (If they don't know, that conversation is week-1 item #1.)
  • Inherited hazards — a flight-risk star, an open performance problem, a stalled critical project
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Sep 25, 2026