10. Avoid distractions.
Nothing kills startups like distractions. The worst type are those that pay money: day jobs, consulting, profitable side-projects. The startup may have more long-term potential, but you’ll always interrupt working on it to answer calls from people paying you now. Paradoxically, fundraising is this type of distraction, so try to minimize that too.
11. Don’t get demoralized.
Though the immediate cause of death in a startup tends to be running out of money, the underlying cause is usually lack of focus. Either the company is run by stupid people (which can’t be fixed with advice) or the people are smart but got demoralized. Starting a startup is a huge moral weight. Understand this and make a conscious effort not to be ground down by it, just as you’d be careful to bend at the knees when picking up a heavy box.
12. Don’t give up.
Even if you get demoralized, don’t give up. You can get surprisingly far by just not giving up. This isn’t true in all fields. There are a lot of people who couldn’t become good mathematicians no matter how long they persisted. But startups aren’t like that. Sheer effort is usually enough, so long as you keep morphing your idea.
Make a small number of users really love you
PB made a point in a talk once that I now mention to every startup we fund: that it’s better, initially, to make a small number of users really love you than a large number kind of like you. If I could tell startups only ten sentences, this would be one of them.