Ten patterns that show up repeatedly in interviews and writing from founders who have actually built durable companies. Each piece of advice is commented on by multiple sources; the repetition is what gives the list weight, not the charisma of any single founder.

1. Solve a problem you have

Paul Graham, Brian Chesky, Melanie Perkins all say the same thing. Founders who solve their own problems outpace founders who solve theoretical markets.

2. Start before you're ready

Readiness is usually disguised avoidance. The best founders start ugly, ship quickly, and iterate publicly.

3. Talk to customers far more than you think is necessary

Horowitz, Blank, Fitzpatrick's "Mom Test." The companies that survive are the ones whose founders kept talking to customers past the point of novelty.

4. Hire slowly, fire quickly

Universally repeated, universally under-practised. The cost of a wrong hire compounds; the cost of slow hiring rarely does as much damage as people fear.

5. Pick a business model as carefully as a product

Great product + wrong business model = slow death. Decide how you make money early; iterate the model as deliberately as the product.

6. Focus beats talent

Bezos, Jobs, Musk all quote versions of this. Most founders could succeed at several things; the ones who pick one and stay focused outperform the multi-venture ones.

7. The best founders are also the best salespeople

In early stages, nobody sells the product better than the founder. The bad news: if you can't sell your own thing, you probably haven't built the right thing.

8. Protect runway, optimise for learning

Early-stage success is measured by what you learn per dollar burned. Companies that learn quickly and cheaply out-survive companies that spend heavily on hunches.

9. Culture is how you behave when the stakes are high

Not posters on walls. Bessemer, Netflix, Amazon memos all make the same point: culture is what happens in the hard moments.

10. You never outrun your fundamentals

Boring — and the most repeated truth. Unit economics, retention, product quality. Growth hacks that bypass fundamentals eventually expose them.

Ten patterns, decades of evidence. None of them are secrets. The difficulty is in internalising them at the point when ignoring them is easier — which, for most founders, is most of the time.