The Last 10 Percent: What Adversity Reveals About Us

I recently finished reading David Pollack’s book Every Day Counts, and one idea has stayed with me more than any other: the 50-40-10 principle.

I read the book during a season when I have been thinking deeply about leadership, purpose, and what it means to keep moving forward when life does not follow the timeline we expected. Because of that, I did not read it as a distant observer. I found myself measuring its lessons against my own experiences, choices, and hopes for what comes next.

Pollack shares a lesson that was taught to him by Coach John Fabris. The idea is that you can outwork 50 percent of the people around you. You can outprepare another 40 percent. The final 10 percent is mental.

At first glance, it sounds like a formula for athletic or professional success. Work harder than most people. Prepare better than almost everyone else. Develop the mindset needed to separate yourself from the rest.

But the more I thought about it, the more I realized that this concept is about much more than performance.

It is also a framework for adversity.

The first 90 percent may help us become successful. The final 10 percent often determines who we become when success, stability, or certainty is taken away.

The First 50 Percent: Do the Work

The first part of the principle is effort, and this is probably the part that has always come most naturally to me.

Throughout my career, I have believed deeply in showing up, accepting responsibility, and doing the work in front of me. Talent matters. Experience matters. Education matters. Relationships matter. But none of those things eliminate the need for consistent effort.

Early in a career, effort may mean accepting the assignments nobody else wants, learning from mistakes, arriving prepared, and proving that people can depend on you.

As responsibilities grow, effort begins to look different. It becomes less about how many hours you personally work and more about how intentionally you lead. It may mean having difficult conversations, staying engaged when the work becomes uncomfortable, making decisions with incomplete information, or giving your team the support and clarity they need to succeed.

For a CEO or senior executive, effort may be almost invisible. It can mean carrying the weight of decisions that affect hundreds of people, remaining present during uncertainty, and continuing to lead when there is no perfect answer.

The work changes as our titles change, but the requirement does not.

We still have to show up.

The Next 40 Percent: Prepare With Purpose

Hard work alone is not enough.

We have all seen people work incredibly hard while continuing to make the same mistakes. Effort without reflection can turn into motion without progress.

Preparation is what gives effort direction. It has also been one of the ways I have learned to manage uncertainty. When I cannot control every outcome, I can still ask better questions, understand the situation, and prepare myself and the people around me as thoughtfully as possible.

It means studying the situation before reacting to it. It means understanding the people involved, anticipating challenges, asking thoughtful questions, and learning from those who have already walked the road ahead of us.

Preparation is often quiet. It is the research nobody sees, the conversation held before the meeting, the time spent reviewing what worked and what did not, and the willingness to admit that our first approach may not be the best one.

Some of the most prepared leaders I have known are not the people who always have an immediate answer. They are the people willing to slow down long enough to understand the question.

That distinction matters because preparation is not about appearing certain. It is about becoming ready.

The Final 10 Percent: Choose Your Response

The final 10 percent is where the concept became personal for me.

Like many people, I have experienced seasons when hard work and preparation did not produce the outcome I expected. Plans changed. Opportunities ended. Circumstances moved beyond my control. I had to confront the difficult reality that doing the right things does not guarantee the result we want.

That is where the final 10 percent begins.

It is the space between what happens to us and how we choose to respond.

It is what we do after the rejection, the failed project, the difficult performance review, the unexpected career change, the financial setback, the diagnosis, or the personal loss.

It is easy to talk about mindset when life is going well. It is much harder to protect it when the future feels uncertain.

The mental component is not pretending that disappointment does not hurt. It is not forcing positivity or acting as though every setback is secretly enjoyable. It is not ignoring mistakes, avoiding responsibility, or convincing ourselves that nothing needs to change.

Mindset is the decision to face reality without surrendering our ability to move forward.

• It is being able to say:

• This did not go the way I hoped.

• There are things I need to learn from it.

• This experience does not get to define the rest of my life.

Those statements can all be true at the same time.

Adversity Does Not Care About Your Title

One of my biggest takeaways from Every Day Counts is how universal these principles are.

Adversity does not wait until we have enough experience to handle it. It does not disappear when we earn a promotion. It does not care how many people report to us, how much authority we hold, or how impressive our résumé may be.

For a first-year professional, adversity may look like self-doubt, a difficult supervisor, a mistake that feels impossible to overcome, or the realization that professional growth takes longer than expected.

For someone in the middle of a career, it may look like burnout, being passed over, questioning whether the path still fits, or feeling trapped between professional ambition and personal responsibility.

For a senior leader, adversity may involve organizational change, public criticism, an unsuccessful strategy, the loss of a key employee, or the loneliness that can come with making decisions few other people fully understand.

The circumstances are different, but the internal questions are remarkably similar.

• Who am I when the plan stops working?

• Can I remain grounded when the outcome is outside my control?

• Will I allow this experience to make me bitter, or will I let it make me better?

That is the final 10 percent.

Perseverance Is Usually Quiet

We often describe perseverance through dramatic comeback stories. We celebrate the person who endured something difficult and eventually reached an extraordinary outcome.

Those stories matter, but they can also make perseverance feel distant from everyday life.

Most perseverance is much quieter.

It is getting up and trying again when nobody is watching. It is submitting another application. Revising the plan. Apologizing when we were wrong. Asking for help. Showing up for our family while carrying our own uncertainty. Continuing to lead with integrity when recognition is absent.

Sometimes perseverance is not making a dramatic leap forward. Sometimes it is refusing to take a destructive step backward.

That may be what I appreciated most about Pollack’s larger message. Every Day Counts is not really about trying to manufacture a life filled with constant achievement. It is about becoming intentional with the day we have been given.

That message landed differently for me than it might have a few years ago. I have spent much of my professional life focused on the next goal, the next responsibility, and the next opportunity to make an impact. There is nothing wrong with ambition, but this book reminded me that growth is also happening in the quieter moments when there is no title to chase, no immediate win to celebrate, and no clear finish line in sight.

We cannot redo yesterday. We cannot guarantee tomorrow. But we can decide how we will show up today.

What I Am Taking With Me

Finishing this book did not leave me with the belief that effort solves everything. In some ways, it gave me the opposite reminder.

We should work hard. We should prepare thoroughly. We should pursue excellence. But we also have to recognize that even our best effort cannot control every outcome.

That is why the final 10 percent matters so much.

It is where discipline becomes resilience. It is where knowledge becomes wisdom. It is where experience becomes empathy. It is where we decide whether adversity will close us off or deepen our ability to lead and serve other people.

Whether you are beginning your career, leading an organization, rebuilding after a setback, or simply trying to determine your next step, the 50-40-10 principle offers a useful challenge:

• Do the work.

• Prepare with purpose.

• Then protect the part of you that no circumstance should be allowed to control.

Your response.

• The first 90 percent can position you for opportunity.

• The final 10 percent prepares you for whatever happens next.

And sometimes, that last 10 percent is where the most important growth takes place.

That is the lesson I want to carry with me into whatever comes next: continue working, continue preparing, but never underestimate the importance of who I am becoming in the process.

The 50-40-10 framework is attributed to Coach John Fabris and shared by David Pollack in Every Day Counts: Start Where You Are. Use What You Have. Do What You Can.