By Dr. Tess Breen, Organizational Psychologist

Key takeaway: Most first-time managers struggle not because they lack talent, but because they are promoted for individual performance and then left without support to make a profound identity shift. Nearly 60% receive no training at the transition. The result is predictable: burnout, disengaged teams, and capable people who quietly conclude leadership isn’t for them. The fix is structured onboarding for the role of manager, not just the title.

Almost 60% of first-time managers say they received no training when they stepped into their first leadership role, and 26% say they didn’t feel ready to lead others in the first place (Exec Learn, 2025). Those two numbers explain a lot of what I see when organizations call me in to help with a struggling team. The problem usually isn’t the person in the manager’s chair. It’s how they got there and what happened, or didn’t happen, in the months after.

The promotion that quietly sets people up to fail

Here’s the pattern. Someone is excellent at the work. They hit their numbers, they’re reliable, they make the team look good. So they get promoted. The logic feels sound, but it confuses two very different kinds of competence. Being the best individual contributor on a team tells you almost nothing about whether someone can develop others, navigate conflict, or make decisions when the data is incomplete and emotions are running high.

When organizations promote for past performance and then provide no scaffolding for the new role, they’re effectively asking a strong runner to coach a swim team. The skills don’t transfer on their own. One pattern I keep seeing in my work with executive teams is that the new manager’s old strengths actively get in the way. They keep doing the work themselves because that’s what made them successful, and the team they were promoted to lead slowly stops growing.

It’s an identity shift, not a skills gap

The most useful frame I know for this comes from Linda Hill’s research at Harvard Business School, published in her book Becoming a Manager (1992). Hill followed 19 first-time managers through their first year and found that the transition wasn’t really about learning a checklist of skills. It was a transformation of identity. New managers had to stop thinking of themselves as the person who does the work and start thinking of themselves as the person responsible for an entire team’s output, relationships, and development.

That reframing is harder than it sounds. It means giving up the immediate, visible satisfaction of doing a task well yourself in exchange for the slower, messier work of getting results through other people. Hill documented how this shift happened mostly through trial and error, and how costly that trial and error could be when nobody was guiding it. Burnout and bad judgment weren’t signs of weak managers. They were the natural consequence of letting people figure out a fundamentally new role entirely on their own.

Imposter feelings are the norm, not the exception

If you’ve recently moved into management and felt like a fraud, you’re in the majority. Research from the Institute of Leadership and Management found that 73% of leaders experience imposter feelings during transitions, and those feelings are especially pronounced among women and people from underrepresented groups. When a new manager is privately convinced they don’t belong in the role, two things tend to happen. They overcompensate by trying to prove they still have all the answers, which shuts down their team. Or they freeze on the decisions that matter most.

Naming this openly helps. When I tell a room of new leaders that nearly three quarters of their peers feel exactly the same way, you can watch shoulders drop. The feeling doesn’t mean they’re failing. It means they’re in the middle of a real transition, and transitions take time. Research suggests most internal hires need more than 90 days to reach full productivity in a new leadership role, and a quarter say it took at least six months to have real impact.

What actually helps new managers succeed

The encouraging news is that this is fixable, and the fix isn’t expensive relative to the cost of a failed manager. Three things consistently move the needle. First, train people before or right as they step into the role, not a year later once habits have set. Second, pair the identity shift with real support: a coach, a peer cohort of other new managers, or a manager who treats developing leaders as part of their own job. Hill’s research and more recent work both point to structured accountability and peer learning as the elements that make development stick. Third, redefine what success looks like in the first six months. If you measure a new manager only on output, you’ll push them straight back into doing the work themselves. Measure them on whether their people are growing.

Organizations that take leadership development seriously perform measurably better, with research linking robust development to roughly 25% stronger performance than leadership-starved competitors. The first management transition is one of the highest-leverage moments in anyone’s career. Treating it as a real transition, rather than a reward, changes everything that follows.

If your organization is promoting strong performers into management and hoping they’ll figure it out, I can help you build a transition that actually works. Work with me to design leadership development that supports new managers through the shift, not just the announcement.

Frequently Asked Questions

Why do first-time managers fail so often?

Most first-time managers are promoted for their individual performance and then given little or no preparation for the very different job of leading others. Nearly 60% receive no training at the transition (Exec Learn, 2025). The struggle is usually a support gap, not a talent gap.

How long does it take to adjust to a management role?

Research suggests most internal hires take more than 90 days to reach full productivity in a leadership role, and about a quarter say it took at least six months to have real impact. Expecting immediate results pushes new managers back into doing the work themselves instead of leading.

Is it normal to feel like an imposter as a new manager?

Yes. The Institute of Leadership and Management found that 73% of leaders experience imposter feelings during transitions, with those feelings more pronounced among women and underrepresented groups. The feeling is a sign of being mid-transition, not a sign of being unfit for the role.

What’s the single best way to support a new manager?

Pair training with ongoing support and redefine success. A coach or a peer cohort of other new managers, combined with measuring early success on whether their people are growing rather than on raw output, prevents the most common failure mode of a new manager who never stops doing the individual work.

Sources

• Hill, L. A. Becoming a Manager: Mastery of a New Identity. Harvard Business School Press, 1992.
• Exec Learn. “29 Eye-Opening Leadership Development Statistics.” Exec, 2025. https://www.exec.com/learn
• Institute of Leadership and Management. Research on imposter feelings during leadership transitions, cited in MindsOpen, “The Psychology of Leadership Transitions.”
• Genesis Advisers. “Why Most Leadership Transitions Fail and How to Succeed.”