As a company grows, founders can't know everyone. The key to preserving culture is not maintaining personal relationships but ensuring early, influential employees don't become political gatekeepers. Be ruthless in removing those who play for themselves, not the company.

Leaders struggling with firing decisions should reframe the act as a protective measure for the entire organization. By failing to remove an underperformer or poor cultural fit, a leader is letting one person jeopardize the careers and work environment of everyone else on the team.

A kind culture must be actively protected. How a company handles high-performing but unkind employees reveals its true values. Prioritizing cultural integrity by addressing or removing these individuals sends a powerful signal that kindness is non-negotiable, even at a potential short-term cost.

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.

Your culture isn't what's on the walls; it's defined by the worst behavior you allow. Firing a high-performing but toxic employee sends a more powerful message about your values than any mission statement. Upholding standards for everyone, especially top talent, is non-negotiable for a strong culture.

A company's culture isn't its mission statement; it's the worst behavior it's willing to accept. High-integrity employees will leave a toxic environment, while transactional, self-serving employees who tolerate anything for a paycheck will stay. This selection process causes a continuous erosion of culture.

Allowing a high-performing but toxic employee to thrive sends a clear message: results matter more than people. A leader's true impact and the company's real culture are defined not by stated principles, but by the worst behavior they are willing to accept.

When a startup fails due to team issues, the root cause isn't the underperforming employee. It's the CEO's inability to make the hard, swift decision to fire them. The entire team knows who isn't a fit, and the leader's inaction demotivates and ultimately drives away top performers.

High-performing CEOs don't hesitate on talent decisions. One mentor's advice was to act immediately the first time you consider firing someone, as indecision only prolongs the inevitable and harms value creation. This counteracts the common tendency for CEOs to be overly loyal or fear disruption.