All the mythologizing is so unfortunate. It has popularized badly misguided notions about how a CEO can succeed in a job that’s not only crucial to the economic foundations of our society but also so cognitively, emotionally, and physically challenging that nearly a third of those appointed last fewer than three years in the role. The mythmaking has obscured so many important lessons we can learn from observing how CEOs struggle mightily with the changing challenges of the role. And overcome them, not only in the early going but also throughout their tenures.

Similarly, the CEO Life Cycle will help leaders play a better game by anticipating the evolving challenges of the CEO job and preparing for them. It will help CEOs recognize when they are heading into a new stage of their tenure and stay vigilant about avoiding common pitfalls made in that stage. Additionally, it will help them stay on the offense, proactively engaging in new learning and personal growth, ahead of the curve, as they progress through the stages. The findings can also help boards anticipate issues CEOs may face and engage with CEOs more vigorously to provide support at critical junctures.

Building on our study findings that CEOs who lead through influence were the most effective, we followed up by conducting interviews to learn about the development advice and training these leaders had received. We asked leaders to describe how they made the journey to becoming the highly effective leaders they were. What emerged is that a leader’s evolution generally proceeds in iterative cycles, with steps forward often followed by backsliding into old habits and then a renewed effort at change. It’s a process of trial and error, and often of fits and starts, as the daily grind of immediate demands diverts attention from one’s inner work. Those who continue to progress in the journey typically go through a three-phase cycle.

First, they are confronted with a necessity for change either because they took on a new challenge that reveals the shortfalls in their leadership or through feedback from their higher-up, colleagues, or mentor.

There are going to be surprises no matter how well you know a company. Learning about them early is challenging because employees, even at the highest levels, are reluctant to share troubling information. Learning what you need to know requires rigorous questioning while conveying in a compelling way that you absolutely want people to speak openly.

A CEO coming in from the outside needs to emphasize getting a good fix on the full range of business operations, the strengths and weaknesses of the leadership team, and the nature of the culture.

In our work with executives, we’ve seen that joining another board early in a CEO’s tenure may be too large a demand on time, but after the CEO has achieved success, their middle to later years should afford more time for valuable external activities. The key is to make sure a board opportunity is truly valuable in terms of insights to bring back inside.