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New Manager: Your First 90 Days
The mindset shift, what to stop doing, what to start, and the conversations to have in week one.
9 min read
60-Second Summary
- Week 1: listen. Don't change anything in week 1.
- First decision should be small and reversible — build the muscle, not the legend.
- Schedule 1:1s with every report and adjacent leader in the first 14 days.
- Trade individual output for team output. The hardest mental shift in the role.
Most new managers fail in the same two ways: they keep doing the IC job, or they over-correct and stop touching the work entirely. The middle path is deliberate.
The shift
What changes
Before
- Measured by output
- Optimized for own throughput
- Reward = ship code/closed deal
- Solving problems yourself
After
- Measured by team output
- Optimized for team throughput
- Reward = your team’s wins
- Helping others solve problems
What to stop doing
- Doing the high-leverage IC work that only you can do
- Reviewing every PR / pitch / deck personally
- Saying yes to every project request
- Avoiding the hard conversation because you’re ‘new’
What to start
- Weekly 1:1 with each report by end of week 1
- Shared 1:1 doc per person
- Manager-skip-level cadence agreed with your manager
- Read your team’s last two performance review cycles
- Identify one ritual to keep and one to retire
Week-one conversations
- Each direct report: ‘What’s working? What’s in the way? What do you want me to do differently from your last manager?’
- Your manager: ‘What does success look like in 90 days?’
- Your peer managers: ‘What do you wish I’d know about this team / this org / this company?’
- One stakeholder: ‘What does your team need from mine?’
Further reading
- The First 90 Days (Watkins) — HBR Press
- Becoming a Manager (Linda Hill, HBS) — Harvard Business School Press
- The Making of a Manager (Julie Zhuo) — Portfolio
Deepen your reading
From the Insights desk
Longer-form essays that extend the ideas in this playbook with research, data, and 2026 context.
Written by Pawan Joshi.Sources cited inline.
First published 15 Oct 2025See site changelog →
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