Those who see life, business, and the pursuit of accomplishment as about finding that one big hit—the one big lucky break—fail to grasp how true greatness happens. No great company, no great career, no great body of work comes about by a single event, a single flip of the coin, a single hand played. Of course, persistence doesn’t guarantee success; and the best leaders understand that they may need to change strategies, plans, and methods on the long path to building a great company. But they also understand and live out this simple truth: Luck favors the persistent.

I’d like to close this chapter with an essential caveat about persistence from Built to Last. Of all the paragraphs I’ve authored or co-authored in thirty years, this is one of the most essential for entrepreneurs and leaders of early-stage ventures, reproduced here as a reminder to keep firmly in mind as you build your company:

The builders of visionary companies were highly persistent, living to the motto: Never, never, never give up. But what to persist with? The company. Be prepared to kill, revise, or evolve an idea . . . but never give up on the company. If you equate the success of your company with the success of a specific idea—as many businesspeople do—then you’re more likely to give up on the company if that idea fails; and if that idea happens to succeed, you’re more likely to have an emotional love affair with that idea and stick with it too long, when the company should be moving vigorously on to other things. But if you see the ultimate creation as the company, not the execution of a specific idea . . . then you can persist beyond any specific idea—good or bad— and move toward becoming an enduring great institution.

Level 5 leaders who build the greatest and most durable companies think first about “who” and then about “what.” They first get the right people on the bus (and the wrong people off the bus) and then figure out where to drive the bus.

When you’re facing chaos, turbulence, disruption, and uncertainty, and you cannot possibly predict what’s coming around the corner, your best “strategy” is to have a busload of disciplined people who can adapt and perform brilliantly no matter what comes next. Our research supported what we came to call “Packard’s Law” (named in admiration after HP’s co-founder): No company can consistently grow faster than its ability to get enough of the right people and still become a great company. If a company consistently grows faster than its ability to get enough of the right people, it will not simply stagnate, it will fall. The number one metric to track isn’t revenue or profit or return on capital or cash flow; the number one metric is the percentage of key seats on the bus that are filled with right people for those seats. Everything depends on having the right people. (Directed reading: Good to Great, Chapter 3; BE 2.0, Chapter 2.)

Businesses do not maximise anything. The most successful business leaders such as Marks or Walton or Gates pursued the unquantifiable, but entirely meaningful, objective of building a great business. A great business is very good at doing the things we expect it to do— rewarding its investors, providing satisfying employment, offering goods and services of good quality at reasonable prices, fulfilling a role in the community— and to fail in any of these is, in the long run, to fall in all of them.

This can be particularly disorienting if you thought success would make you eternally happy or fill your life with meaning, only to discover that it does neither. Achieving success or accomplishing a huge goal (whether personal or public) does not answer the question of what to make of a life. In fact, it can have the exact opposite effect, forcing the question back to the center of your existence, to be addressed anew.

In my previous research into the question of what makes great companies tick, my colleagues and I observed a prevalent precursor to corporate decline: the post-BHAG stall. BHAG (pronounced “bee-hag”) stands for “Big Hairy Arduous Goal.” In Built to Last, Jerry Porras and I discovered the power of having a BHAG to galvanize an organization, acting as a powerful mechanism to stimulate progress. But we also discovered that companies can become adrift and on the verge of decline after achieving the BHAG. To avoid this trap, a company needs to have an enduring reason for being (its core purpose) that acts like a star on the horizon, forever chased but never reached no matter how many goals the company achieves.