I’ve found that knowing why users are not continuing to use your product is a very important thing.
Seek out people who are more likely to reject than accept you. In the first startup, we were like, “We built something awesome, and even my mom has the app installed,” but that sort of validation is not useful.
In Postman’s case, we would seek out hardcore developers, people who don’t like most things; they’re very tough customers.
You cannot be scared of going and asking for their feedback because you may get punched in the face with that feedback. So we kind of built that muscle to be able to withstand that sort of thing.