You have to be burning with “an idea, or a problem, or a wrong that you want to right.” If you’re not passionate enough from the start, you’ll never stick it out.
If you keep your eye on the profit, you’re going to skimp on the product. But if you focus on making really great products, then the profits will follow.
The hardest thing when you think about focusing. You think focusing is about saying “Yes.” No. Focusing is about saying “No.” And when you say “No,” you piss off people.
