When should you quit? How to strategise a graceful exit and navigate your next as a senior leader

UK prime minister Keir Starmer’s resignation has triggered the usual post-mortem that follows any high-profile leadership departure. Commentators are debating what went wrong, whether he stayed too long or left too soon, and what his successor must do next.

While politics and business are very different arenas, they share one uncomfortable truth: every leader eventually faces the same question – when is it time to go? After more than 30 years working with CEOs, boards and executive teams, I’ve found that the hardest leadership decision is often not how to lead an organisation but knowing when your job within it is done. The reality is that leadership roles have a lifecycle. 

No leadership role lasts forever
There is an old executive joke about a newly appointed CEO who arrives on their first day to find three envelopes left by their predecessor, to be opened a year apart. The first envelope says: ‘Blame everything on me.’ To be opened on the second year, the next envelope says: ‘Blame everything on the team.’ After year three, the third says: ‘Prepare three envelopes.’ Like most leadership humour, it contains more truth than fiction.

Many senior leaders still behave as though their role is permanent, but increasingly leadership positions are project-based. Boards hire executives to achieve specific outcomes: scale a business, transform operations, enter a new market, lead a turnaround, or prepare for an acquisition. Indeed, 39% of S&P 500 CEOs have tenures ranging from just one to five years, with 50% serving 10 years or less.  In other words, most leadership roles come with an unspoken expiry date. The question is not whether you’ll leave, but whether you’ll recognise the right moment when it arrives.

The three reasons leaders leave

In my experience, most executive departures fall into one of three categories:

1. The mission is complete

Some leaders enter a role with a clear objective and leave once it has been achieved. Perhaps they were hired to take a company public, oversee a merger, drive a transformation programme or scale a business through a critical growth phase. Once that objective is accomplished, their value creation may naturally decline. The strongest leaders understand that what made them successful during one chapter may not make them the right person for the next. A founder who brilliantly grows a company to £100m in revenue may not be the person best equipped to lead a multinational organisation. Likewise, a turnaround specialist may struggle in a highly regulated business that now requires steady optimisation.

2. Momentum has stalled

This is the most common and often the most difficult scenario… A leader, much like Keir Starmer, may discover they don’t have the support, resources or conditions needed to execute their vision. The board may resist change, key members of the leadership team may push back, market conditions may deteriorate or competitors may move faster. It’s not always that the problem is about a leader’s capabilities, but more about the context in which they’re operating.  One of the clearest signs it may be time to leave is when you repeatedly find yourself unable to move the organisation forward despite your best efforts. In this instance, energy is spent overcoming internal resistance rather than creating value, thus leadership becomes exhausting rather than productive. At this point, many executives face a choice: continue fighting a battle they cannot win or acknowledge that their skills may be better deployed elsewhere.

3. You’ve run out of challenges

The third scenario is less dramatic but equally important. Many leaders reach a point where the business is performing well, but they no longer feel challenged by the work. The excitement has gone, the learning has slowed and growth has plateaued.  This often happens after several years of success, but may simply be a signal that they have reached the end of a particular chapter. If you’re no longer learning, stretching yourself or excited by the future of the organisation, it may be time to ask whether you’re staying because you’re still adding value or simply because leaving feels uncomfortable.

Know what type of leader you are
One reason executives struggle to recognise the right moment to leave is because they misunderstand their own leadership style. Broadly speaking, I’ve found CEOs fall into three categories.

The first are iconoclasts: founders and visionaries who want to disrupt industries and change the world. Think Elon Musk, Sam Altman or Mark Zuckerberg. For these leaders, the company is often inseparable from their identity. They rarely choose to leave voluntarily and are sometimes called ‘forever CEOs’. The second are competitive leaders, who make up the majority of CEOs. They are motivated by winning, growth and outperforming competitors. These leaders naturally move through cycles of building, scaling and improving organisations – usually before moving on to the next. The third are defensive leaders, who prioritise continuity, stability and risk management. They are often found in highly regulated industries like utilities, or mature organisations where consistency matters more than disruption.

Understanding which category you fall into helps answer an important question – are you leaving because you’ve failed, or because your strengths are no longer aligned with what the organisation needs next?

The best exits are intentional
Too many executives wait until circumstances force a decision, while the strongest leaders take a different approach. They regularly assess whether they are still growing, still creating value and still energised by the challenge ahead. If the answer becomes no, they don’t view leaving as failure, they view it as strategy. Your legacy isn’t defined solely by what you build, but also by recognising when it’s time to hand over the baton. The most successful leaders know that navigating your next chapter starts long before you walk out of the door.