Research says up to half of new CEOs stumble in their first eighteen months.
After coaching hundreds of leaders through this exact transition, I can tell you...it's almost never because they weren't good enough.
It's because they made one of five very specific mistakes in the first six months. Mistakes that felt like the right call at the time.
Mistake 1: Proving you deserve the job instead of doing it.
They come in hot.
Restructure in week three.
Strategic review before they've spoken to the front line.
Not because the business needs it...because they need to prove they were the right hire.
I coached a CEO who restructured his senior team within forty-five days. He thought it signalled decisiveness.
The organisation interpreted it as: he made up his mind before he understood us. It took him a year to rebuild the trust he burned in six weeks.
The fix is counterintuitive: slow down to speed up. People aren't scanning for activity. They're scanning for judgment.
Mistake 2: Keeping your old job while pretending to do the new one.
The CEO was promoted from a functional role and never leaves it.
I worked with a former Chief Commercial Officer who became CEO and was back in the pipeline reviews within a month.
Revenue went up for two quarters. But the rest of the business drifted.
Six months in, the organisation had quietly distanced itself from him, not with conflict, but with silence. The shift every new CEO must make is from expert to architect. From doing to deciding what gets done.
The hardest part is letting go of the identity that made you successful in the old one.
Mistake 3: Waiting too long to confront your leadership team.
Every new CEO knows within weeks who's going to make it and who won't.
Almost every one waits too long to act.
The reasons sound responsible: "I want to give people a fair chance." But the organisation figures out the team's weaknesses faster than you do. When you don't act, the message isn't patience.
The message is: our new leader either can't see it, or can't deal with it. One CEO told me: "Every month I waited, the change got harder and the cost got higher."
Mistake 4: Trying to align the company before aligning the board.
New CEOs naturally focus downward. But the relationship that determines whether you keep the job is upward.
I've seen CEOs build real internal momentum and still lose the board's confidence because they never got clear on what "good" looks like in twelve to eighteen months. The fix: within sixty days, align with your Chair on what success looks like, what's not expected yet, and how progress will be measured. Get that clean and the board becomes your ally.
Leave it vague and every board meeting becomes a performance review where you don't know the criteria.
Mistake 5: Saying one thing and doing another.
The most damaging mistake on this list.
And the one new CEOs almost never see in themselves.
They announce empowerment and then override decisions. Preach transparency and go silent for three weeks. Talk about people being a priority and cut the development budget first.
Every contradiction feels justified in the moment.
But the organisation only sees two things: what you said and what you did. After a few cycles of mismatch, people stop listening to your words entirely. They only watch behaviour.
The leaders who navigate this best do something uncommon: they audit their own signals. They ask their team and their coach: where am I contradicting my own message?
Pick the one that sounds most like you.
Not the one that sounds worst. The one that sounds most familiar. That's where the work starts.
One idea a week on how top CEOs lead when the stakes are high, from inside rooms most people never enter. Free, and you can leave any time.