In addition to relentlessly resourceful, you want a tough and a calm cofounder.

As you grow, the productivity I think, goes down with the square of the number of employees if you don't make an effort.

Be suspicious of any work that is not building product or getting customers. It's easy to get sucked into an infrastructure rewrite death spiral.

The biggest PR hack you can do, is not hire a PR firm.

You need conviction in your own beliefs, and the willingness to ignore others naysaying.

There are exceptions of course, but most companies start with a great idea - not a pivot.

The startups that do well are the ones that are working all the time.