In my work as an executive coach, I’m often brought in at two very different moments.
Sometimes it’s proactive — an organization wants to set a newly promoted or hired manager up for success. We design a thoughtful transition plan, align expectations, and build momentum early.
But just as often, I’m called in after the damage is done.
A promising leader made avoidable missteps in their first 90 days.
They moved too fast.
Changed things before listening.
Misread political dynamics.
Overcorrected to prove themselves.
Or failed to clarify what success actually meant.
By the time I’m brought in, trust has eroded. Key stakeholders are skeptical. The manager is frustrated — and sometimes blindsided. What could have been a strong launch becomes a salvage operation.
Here’s the hard truth:
The first 90 days create a narrative about you. And once that narrative sets in, it’s much harder to rewrite.
The good news? Most early mistakes are preventable.
The managers who thrive aren’t necessarily the smartest in the room. They’re the most intentional. They understand that transitions are high-stakes leadership moments — not just job changes.
Here are the 10 moves that consistently separate managers who thrive from those who stall.
1. Listen Before You Lead
The fastest way to lose credibility? Changing things before you understand them.
Schedule intentional one-on-ones early. Ask:
- What’s working well?
- What’s frustrating?
- What’s one thing you’d fix immediately?
- What do you wish leadership understood?
Listening deeply builds trust and reveals patterns you won’t see in reports.
2. Clarify What Success Actually Looks Like
Many managers fail not because they lack ability—but because they misread expectations.
Have a direct conversation with your boss:
- What does success look like at 30, 60, and 90 days?
- What are the top 2–3 priorities?
- What landmines should I avoid?
Alignment early prevents awkward surprises later.
3. Map Influence, Not Just Structure
The org chart tells you who reports to whom. It does not tell you who influences outcomes.
Identify:
- Informal leaders
- Long-tenured culture carriers
- Skeptics with quiet influence
- Cross-functional partners who can accelerate (or block) progress
Understanding power dynamics is strategic—not political.
4. Deliver One or Two Early Wins
You don’t need a full transformation in 90 days. You need momentum.
Look for:
- A nagging operational pain point
- A small process improvement
- A communication fix everyone appreciates
Visible wins signal competence and action.
5. Set Clear Operating Norms
If you don’t define how your team works, old habits will define it for you.
Clarify:
- How decisions get made
- Meeting expectations
- Response times
- Feedback culture
- Accountability standards
Clarity reduces friction.
6. Shift From Doer to Multiplier
Many new managers struggle because they keep performing their previous role.
Ask yourself:
- What must I stop doing?
- What should I delegate?
- Where does my leadership add the most leverage?
Your job is no longer output. It’s alignment, direction, and capability building.
7. Diagnose Before You Prescribe
It’s tempting to “fix” things quickly. Resist the urge.
Problems may stem from:
- Role confusion
- Process breakdowns
- Burnout
- Skill gaps
- Legacy leadership dynamics
The right solution depends on the right diagnosis.
8. Build Individual Trust
Team trust is built one relationship at a time.
Early actions that matter:
- Keep your promises.
- Protect your team publicly.
- Address issues directly, not indirectly.
- Admit when you don’t know something.
Consistency builds credibility.
9. Narrate Your Thinking
New managers who explain their reasoning reduce resistance.
Try:
- “Here’s what I’m noticing.”
- “This is a hypothesis.”
- “Help me understand what I’m missing.”
Transparency lowers defensiveness and increases collaboration.
10. Create a 90-Day Learning Agenda
Instead of focusing only on tasks, define what you need to learn.
- What does this team value?
- Where are the performance bottlenecks?
- What are the cultural norms?
- How does this organization reward and punish behavior?
The faster you learn, the better you lead.
The Real Goal of the First 90 Days
The first 90 days aren’t about proving how smart you are.
They’re about proving you are:
- Grounded
- Curious
- Decisive (when needed)
- Trustworthy under pressure
Leadership credibility compounds. What you do early either accelerates that compounding—or delays it.
If you’re stepping into a new management role and want to approach it strategically rather than reactively, the first 90 days are your leverage window.
Use them wisely.
# # #
Dr. Kevin Nourse is a certified executive transition coach. He founded Nourse Leadership Strategies, a coaching firm based in Southern California. Contact him at 760.237.0045 or kevin@nourseleadership.com
(C) Kevin Nourse, 2026
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