In a turnaround, a leader's most critical first step is restructuring their direct reports. McLaren's CEO replaced every key leader—CFO, HR, commercial, etc.—to create a unified group that could then drive cultural change down through their own departments.

The board hired GE's Robert Nardelli, who focused on metrics over culture. He optimized for profit but killed employee morale and customer service, causing the stock to flatline. This proved a company's unique, founder-instilled culture is a tangible asset that can be destroyed by purely data-driven management.

Sears' decline was epitomized by a CEO who felt like a "stranger" in his own stores and pursued abstract corporate strategies. In contrast, Home Depot mandated that every executive spend time on the floor, ensuring that strategic decisions were grounded in the reality of the customer experience.

The CEO of AT&T, a 40-year veteran, argues that an insider who understands the company's DNA can be more effective at evolving its culture than an external disruptor. This challenges the common belief that transformational change requires bringing in a complete outsider.

On the verge of closing a crucial deal, Bernie Marcus threw a Boston VC out of his car for demanding cuts to employee healthcare. He prioritized culture over capital, believing the company's foundation rested on taking care of its people, a non-negotiable principle even when facing failure.

Zak Brown's first move at the struggling McLaren F1 team was to overhaul the leadership team, bringing in fresh blood to create alignment before tackling technical or commercial issues. This established a new, winning culture from the top down.

A senior hire was instrumental in getting Snowflake's CRO promoted. Eighteen months later, that same person was found to be 'cancerous to the organization.' The CRO had to fire them and go on an 'apology tour,' a painful but necessary act of leadership to protect the company culture.

Home Depot's culture inverts the traditional corporate pyramid. The most important person is the frontline employee interacting with the customer, not the CEO. This philosophy ensures that the entire organization is structured to support the people who directly create the customer experience and drive sales.

CEO Zach Brown revived McLaren not by firing everyone, but by transforming a "toxic work environment" into one of transparency and collaboration. He kept many of the same long-term employees, showing that fixing culture can unlock the potential of an existing team, even in a high-stakes environment.