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The New Manager's
First 90-Day System

Stop surviving. Start leading.

60% of first-time managers underperform in year one — not from lack of skill, but because nobody taught them how to actually lead. This checklist gives you the structure to get your first 90 days right.

Trusted by leaders at

"Within 30 days I had more clarity on my role than I'd had in the previous six months. The structure gave me permission to actually lead." — Sarah T., Engineering Manager, Deloitte

What's Inside

PHASE 1  ·  DAYS 1–30  ·  ORIENT

Know your ground

  • Clarify decisions, priorities, and escalation boundaries with your manager
  • Schedule 1:1s with every direct report in your first two weeks
  • Map the informal power structure — who gets things done
  • Audit existing tools and processes: note 3 changes, don't make them yet
  • Establish your operating rhythm: 1:1 cadence, meeting format, decision-log
PHASE 2  ·  DAYS 31–60  ·  BUILD

Establish your leadership

  • Announce your leadership style to your team directly
  • Share 30-day observations without burning bridges — frame as questions
  • Make one visible, low-stakes decision and explain your reasoning
  • Run your first batch of intentional 1:1s: agenda, listen, follow up
  • Identify your biggest blind spots and name your support plan
PHASE 3  ·  DAYS 61–90  ·  DELIVER

Earn your seat

  • Deliver your first meaningful team win — something the group achieved
  • Run a structured 360 check-in: 5 peers, 5 reports, aggregate themes
  • Adjust your approach based on what you've learned
  • Formalise team operating agreements: decisions, conflict, feedback
  • Book your day-90 retrospective with your manager now
The Grounded Approach™ — Three Pillars

Clarity

Know who you are, what you stand for, and what you're here to build.

Authenticity

Lead as yourself — not a copy of whoever came before you.

Sustainability

Build rhythms that keep you effective without burning out.

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90
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3
Pillars of the Grounded Approach™
1
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