You'll get more support on a hard, important, project than a derivative one.
You have to let your team get all the credit for all the good stuff that happens, and you take responsibility for the bad stuff.
Cofounder relationships are among the most important in the entire company.
To get the very best people- they have a lot of great options, and so it can easily take a year to recruit someone.
Be suspicious of any work that is not building product or getting customers.
When it comes to starting startups, in many ways, it's easier to start a hard startup than an easy startup.