Good startups usually take 10 years.

One thing I tell startups all the time is that the best way to grow is to make their product better.

Don't let the company get distracted or excited about other things. A common mistake is that companies get excited by their own PR.

You think you have this great idea that everyone's going to come join, but that's not how it works.

It's really easy to get PR with no results & it actually feels like you're really actually cool, but in a year you'll still have nothing.

In YC experience, 2 or 3 co-founders seems to be about perfect.

Most startups are not nearly focussed enough. They work hard...maybe, but they don't work hard on the right things.