Unbound Merino's founders reject the common wisdom that business and friendship don't mix. They argue it's an advantage because you start with baked-in trust and value alignment, making it easier and more enjoyable to navigate the inevitable challenges of building a company.

Founders must accept a lifestyle that excludes most social activities. The intense, shared mission of building a company fosters deep connections with colleagues that supplant traditional friendships. This sacrifice is a prerequisite for high-commitment entrepreneurship.

Beyond tactical advice, a subtle but crucial YC teaching is the importance of being helpful to the community. The culture, reinforced by practices like "shout outs" for helpful batchmates, ingrains the idea that success is tied to being relentlessly resourceful for others, not just for oneself.

Young attributes his long-standing partnership with Rich Lawson to their complementary 'yin and yang' skills; one's strengths cover the other's weaknesses. This dynamic, fortified by trust built through shared crises, creates a more resilient collaboration than one based on overlapping expertise.

The founder's number one piece of advice is to get the co-founder relationship right. While you can pivot ideas, raise more funding, or change markets, replacing a co-founder is incredibly difficult. A strong, complementary founding team is the foundation for overcoming all other startup challenges.

The founders credit their successful partnership to an equal commitment to hard work. By dividing responsibilities and working independently before collaborating ('divide and conquer'), they ensure an even playing field and avoid the common pitfalls of co-founder burnout or resentment that often ruin business friendships.

Financial capital is secondary to the value of human relationships. Your network incubates your future potential, providing access to opportunities, knowledge, and support that money cannot buy. A person with strong relationships needs little money, as everything they need will flow through those connections.

Entrepreneurs often avoid asking friends and family for business, fearing they'll appear unsuccessful before they've even started. This is a mistake. If your mission is authentic, this immediate network is the most likely group to offer support, provide crucial early feedback, and create initial business momentum.

Generosity towards employees and customers is more than just good ethics; it's a strategic move in the iterated game of business. It signals your intent to cooperate, which encourages reciprocal cooperation from others. This builds trust and leads to superior long-term outcomes versus a defect-first approach.