NM
New Manager: First 90 Days
🔵 Stable🕐 updated 2026-08-21
🔷 SkillSpec L3
pm-career
Plan your first 90 days as a new manager — build trust, learn before changing, and avoid the classic first-time-manager mistakes. Use when asked to help me as a new manager, I just became a manager, first-time manager advice, or my first 90 days managing a team. Produces a phased 90-day plan (listen and learn, then set direction, then adjust), how to run your first 1:1s, the mindset shift from doer to enabler, common traps to avoid (doing it all yourself, changing too fast, avoiding hard conversations), and early wins that build credibility.
🗣 Say this to your agent
“I just became a manager for the first time — help me plan my first 90 days.”“How do I run my first 1:1s with my new team?”“I got promoted over my former peers — how do I handle it?”“I'm a new manager and keep doing all the work myself. Help.”“What are the biggest mistakes new managers make and how do I avoid them?”
What to give it
▸The situation — inherited team, new team, promoted over former peers, or a turnaround
▸The team — size, and what you know about how it's doing
▸Your background — first-time manager or experienced, and your relationship to the team
▸The context — org expectations, any pressing issues
▸Your worry — what you're most unsure about
✅ The bar it holds itself to
Every skill in this library self-verifies — these are this skill's own quality checks, straight from its definition.
✓Plan is phased (learn → direct → adjust), not change-everything-now
✓Includes how to run trust-building first 1:1s
✓Names the doer→enabler mindset shift and delegation
✓Warns against the classic first-time-manager traps
✓Includes appropriate early wins
✓Tailored to the situation (inherited/peers/turnaround)
⚠️ What it refuses to do
**Changing everything on day one** before understanding.
**Staying an IC** with a manager title (won't delegate).
**Skipping real 1:1s** and relationship-building.
**Avoiding underperformance/tension** early.
**Favoritism** or trying to be everyone's friend over being fair.
Install
npx pm-claude-skills add --agent claude # or codex · cursor · gemini · hermes
# or one-line MCP (every skill, any client):
claude mcp add pm-skills -- npx -y pm-claude-skills-mcpRelated skills
🔌 Embed this skill
Drop this on your blog, docs, or site — it renders a "Run this skill" card:
<div data-pm-skill="new-manager-first-90-days"></div>
<script src="https://mohitagw15856.github.io/pm-claude-skills/embed.js" async></script>💬 Discussion
New Manager: First 90 Days is one of 1153 open-source professional AI agent skills — all SkillSpec L3.
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