Be suspicious of any work that is not building product or getting customers.

In general, it's best if you're building something that you yourself need.

By the way, that's my number one piece of advice if you're going to join a startup: pick a rocket ship.

What being a founder means, is signing up for this years long grind on execution - and you can't outsource this.

You also want to fire people who a) create office politics, and b) who are persistently negative.

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.

It's better to have no cofounder than to have a bad cofounder, but it's still bad to be a solo founder.