Your First 90 Days as a New Manager: Six Things to Focus On
Your first 90 days as a new manager start the moment you get the news. Congratulations — now take a breath, because what got you here won’t necessarily get you through what comes next.
A promotion feels like a reward for past performance. And it is. But the moment you step into the new role, the scoreboard resets. Your boss is watching to see whether they made the right call. Your team is figuring out what kind of leader you’re going to be. Your peers are recalibrating where you fit. All of that is happening simultaneously, usually from day one.
The research on leadership transitions is sobering: a significant number of newly promoted leaders — particularly those moving from individual contributor to people leader, or from leading a team to leading leaders — struggle to meet expectations in their first two years. Not because they’re not talented. Because they carry the habits that made them successful into a context where those habits no longer serve them.
The good news: most of the common mistakes are entirely avoidable. Here are six things to focus on in your first 90 days as a new manager.
1. Get clear on what success actually looks like
Reading the job description is not enough. Your first priority is a proper conversation with your boss — not a meet-and-greet, but a working session where you get explicit about expectations. What does success look like at 30, 60, and 90 days? What does your boss most want you to protect, and what are they hoping you’ll change? Who on the team are they watching, and why?
This conversation also runs the other way. What do you need from your boss to do this well? What’s your preferred working style? How do you want to handle disagreements? A promotion is the beginning of a new working relationship — treat it like one. And make it a recurring conversation, not a one-off.
2. Invest in your team before you try to lead them
Your instinct will be to demonstrate value quickly — make decisions, set direction, show that the promotion was deserved. Resist it, at least initially. Before you lead anyone anywhere, you need to understand who you’re leading.
Meet with each team member individually. Not to assess them — to understand them. What are they working on? What’s getting in their way? What do they wish the previous leader had done differently? What do they need from you? This isn’t just relationship-building — it’s intelligence-gathering that will make every decision you make in the first 90 days sharper.
In Cultivate: The Power of Winning Relationships, I map workplace relationships across four dynamics: Ally, Supporter, Rival, and Adversary. Your first job as a new leader is to understand where each key relationship sits — and what it will take to move them toward Ally territory.
3. Don’t neglect your horizontal relationships
New leaders almost always focus vertically — managing up to the boss, managing down to the team. The relationships that get overlooked are the horizontal ones: peers within your function, colleagues in other departments, key stakeholders across the business.
These are the people who will either smooth your path or quietly complicate it. Identify the five to ten peer relationships that matter most for your success in this role. Meet with them early. Listen more than you talk. Understand their priorities, their frustrations, and how your work connects to theirs. Ask them what they’d want a new leader in your position to understand.
Horizontal relationships don’t announce themselves as important — they just quietly determine whether things get done.
4. Lead with questions before you lead with answers
The trap most newly promoted leaders fall into — especially if they were promoted internally — is assuming they already know what needs to change. Sometimes they’re right. Often they’re not, because the view from inside a role is different from the view from outside it.
Spend your first 30 days asking more than you answer. Use the Relationship Pulse Check — three questions I use with leaders and teams: what’s working, what’s not working, and what’s one thing we could do to ensure mutual success? Simple, direct, and genuinely useful. The answers will tell you where to focus your energy and where to leave well alone.
Change too much too soon and you signal that you don’t trust what existed before you. Take the time to understand the context first — then make changes that land with credibility rather than resistance.
5. Give feedback that looks forward, not just back
Feedback is one of the most underdeveloped leadership skills at every level, and new leaders are no exception. The most common mistake isn’t being too harsh — it’s only giving feedback when something goes wrong.
Effective feedback is specific, behavioral, and forward-focused. Not “you did a good job” but “when you did X in that meeting, it changed the dynamic — do more of that.” Not “that didn’t land well” but “here’s what I noticed, and here’s what I’d suggest trying next time.”
Coaching is future-focused. Feedback addresses the past. You need both — but in the first 90 days, err toward the future. You’re building relationships and trust, not delivering performance reviews.
6. Let go of the job that got you promoted
This is the hardest one. If you were promoted because you were exceptional at something — a technical skill, a specific domain, a particular way of delivering results — the temptation is to keep doing it. It’s familiar. It’s where you feel competent. And it’s exactly where you should be spending less time.
Your new role requires you to create the conditions for others to do what you used to do. That means delegating, developing, and trusting — even when it’s uncomfortable, even when you know you could do it faster yourself. Leaders who can’t let go of their previous job end up doing two jobs badly instead of one job well.
The skills that earned you this promotion are an asset. They’re just not the primary asset anymore.
Your first 90 days as a new manager are easier with support
Leadership transitions are one of the highest-leverage moments for executive coaching — and one of the most underinvested. Most organizations promote people and then leave them to figure it out. The ones who thrive fastest are usually the ones who have someone in their corner: a thinking partner who is entirely focused on their success, not on the organization’s agenda.
At SkyeTeam, I work with leaders at exactly this moment — the promotion, the new role, the step up that stretches you beyond what got you here. If you’re navigating a transition right now and want to think through what the first 90 days should look like, I’d welcome a conversation. No obligation, no pressure — just a straight talk about where you are and what would actually help.
And if I’m not the right fit, I’ll tell you that too. My colleagues Eric Spencer and Ruby Vesely are both exceptional coaches for leaders in transition, and I have a wider global network I can connect you with.
Reach me at morag@skyeteam.com or book directly at skyeteam.com.
Morag Barrett is a keynote speaker, executive coach, and USA Today bestselling author on a mission to create cultures of connection in a world of disconnection. She is the CEO and founder of SkyeTeam, an international leadership development firm, and has supported more than 15,000 leaders across six continents to achieve better results through the power of their professional relationships. Her books — Cultivate: The Power of Winning Relationships and You, Me, We: Why We All Need a Friend at Work — give leaders the frameworks and conversations that actually move the needle. Her signature keynote, Fine Is a Four-Letter Word, is trusted by Fortune 500 companies and industry conferences worldwide. A member of Marshall Goldsmith’s 100 Coaches — an exclusive global community of the world’s top leadership thinkers and coaches — she is also a regular contributor to Fast Company.
Frequently Asked Questions
What should a new manager do in their first 90 days?
The priority is relationships before strategy. Meet your boss to get explicit about expectations. Meet each team member to understand what they need and what’s getting in their way. Map your key peer relationships and invest in them early. Spend the first 30 days asking more than you answer — the intelligence you gather will make every decision sharper.
What are the most common mistakes newly promoted leaders make?
The three most common: trying to change too much too soon before understanding the context; holding onto the technical skills that earned the promotion instead of delegating and developing others; and neglecting horizontal peer relationships while focusing only on managing up and down. All three are avoidable with a little deliberate attention in the first 90 days.
How can executive coaching help with a leadership transition?
A leadership transition is one of the highest-leverage moments for coaching because the habits and assumptions you carry into a new role determine whether you succeed or stall. A good executive coach helps you understand what the new role actually requires, identify the relationships that matter most, and build the habits that will serve you — rather than the ones that served you before. The leaders who transition fastest almost always have someone in their corner.
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