YC's essential startup advice

Key Takeaways – YC’s Essential Startup Advice
  • Launch now: Don’t wait for perfection. Ship your product and iterate quickly with real customer feedback.
  • Build something people want: Solve a real problem and make sure your product delivers genuine value.
  • Do things that don’t scale: Focus on winning your first users through hands-on, personal outreach—even if it’s unscalable in the long run.
  • Find the 90/10 solution: Aim for solutions that deliver most of the value with a fraction of the effort/time.
  • Find 10–100 customers who love your product: A small group of passionate users is better than lots of indifferent ones.
  • All startups are badly broken at some point: Problems are normal—what matters is how founders address and fix them.
  • Write code, talk to users: Prioritize product development and direct user interaction above all else.
  • “It’s not your money”: Treat investment capital responsibly; your job is to create long-term value.
  • Growth follows product-market fit, not the other way around: Don’t try to scale before making something customers really want.
  • Don’t scale your team/product prematurely: Only expand when your core product resonates with users.
  • Valuation ≠ success: A high valuation is not proof of product or company viability.
  • Avoid long, negotiated deals with big companies: They soak up time and rarely deliver for startups.
  • Avoid conferences and corporate dev distractions: Focus on what builds your product and user base.
  • Remain small and nimble pre-product-market fit: Stay flexible to adapt quickly.
  • Solve one problem at a time: Don’t try to fix everything—focus on the most important issue.
  • Founder relationships matter: Most startups fail due to founder conflicts, so nurture your working relationships.
  • Fire problematic customers if needed: Some customers do more harm than good—don’t be afraid to move on.
  • Ignore the competition early on: Startups are more likely to fail for internal reasons than external threats.
  • Most startups don’t die from lack of money: Poor decisions—not just empty bank accounts—are what sink companies.
  • Be nice—don’t be a jerk: Success often comes down to how you treat others.
  • Take care of yourself: Sleep, exercise, and personal time are crucial for startup endurance.
In summary: YC’s advice distills the mindset and practical steps for early-stage founders: act now, stay close to your users, and iterate rapidly. Success comes from relentless focus on user value, simplicity, and personal relationships—both with customers and co-founders. Don’t let perfectionism, distractions, or competition divert you; most startups fail from internal issues, not lack of capital or external threats. Maintain grit and humility, prioritize what matters, and remember to take care of yourself along the way.
  1. https://www.ycombinator.com/library/4D-yc-s-essential-startup-advice