Eloquent mission statements are meaningless if not embodied by leadership's daily actions. A toxic culture of vengeance and blame, driven by the leader, will undermine any stated values. Employees observe how people are actually treated, and that reality defines the culture.

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.

The actual standards of your organization are not set by posters or mission statements, but by the negative behaviors you permit. If you allow chronic tardiness or underperformance to continue without consequence, you are signaling that this is an acceptable standard for the entire team.

Culture isn't an abstract value statement. It's the sum of concrete behaviors you enforce, like fining partners for being late to meetings. These specific actions, not words, define your organization's true character and priorities.

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.

A16Z has a zero-tolerance policy: employees who publicly "talk smack" about any entrepreneur—even one not in their portfolio—are fired immediately. This prevents a culture of looking smart by making others look stupid and solidifies their core identity as supporters of innovation, not critics.

Wasting energy on envy is counterproductive. Winners are too busy building their own success to tear others down. This negative focus directly detracts from the effort you could be putting into your own venture, effectively stopping your progress while your competitors continue theirs.

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.

Inexperienced professionals often mistake the correlation between talent and abrasive behavior for causation. In reality, success provides a buffer that allows talented people to be jerks without immediate consequences; the bad behavior itself is not a component of their success.