For top performers surrounded by 'yes-men,' the most valuable friends are those who provide ruthless honesty. Like Jimmy Iovine to Bruce Springsteen, they tell you when your work sucks or when you're lying to yourself, which is essential for growth.

Gilbert's core advice was that trying to hit a perfect winner on every shot was a losing strategy. He coached Agassi to focus on being steady and consistent—just good enough to be better than his one opponent that day—rather than chasing an unattainable ideal of perfection.

Instead of viewing a contemporary's breakthrough with jealousy, see it as tangible proof that such moments are possible. This reframes competition into inspiration, fueling the patience and hard work required to be fully prepared when your own opportunity arrives. The key is readiness, not rivalry.

People who cheered for you on your way up may turn to criticism once you've surpassed them. This isn't necessarily malice; your success can unintentionally highlight the compromises or comfort they chose, leading to resentment. Understand this dynamic to navigate relationships as you grow.

Founders with an abundance mindset don't feel threatened by the success of others. They genuinely celebrate when people they've mentored achieve even greater success, viewing it as a sign of a healthy ecosystem, not a zero-sum game. A twinge of jealousy is natural, but happiness should prevail.

While most people feel sympathy when others fail, your genuine reaction to someone's success is a powerful litmus test for your relationship. It instantly reveals whether you feel genuine happiness for them or are harboring envy, exposing the true nature of your connection.

Agassi used his afternoon shower as a form of solitary confinement for intense self-talk. He would repeat strict orders and affirmations over and over until they became ingrained beliefs, essentially pre-winning matches mentally before stepping onto the court.

To gauge if your culture supports momentum, observe your top performers during a colleague's celebration. True A-players will be at the front, celebrating. If they're resentful in the back, you have a culture of 'I-centered' individuals that will kill collective momentum.

Achieving his ultimate goal revealed a "dirty little secret": the positive feeling of winning is fleeting and less potent than the deep, lasting pain of losing. This illustrates the "arrival fallacy"—the mistaken belief that reaching a major goal will bring lasting happiness.