Nielsens First Law of User Research: Never listen to users, observe them.
“It’s not breaking news to say that the core of UX, in a vacuum, is talking to your users to gather insights and then applying that information to your designs. But it’s equally true that UX does not happen in a vacuum. So what happens when you don’t have the budget or the timeline to run user tests, card sorts, or stakeholder interviews? What should you do when your company doesn’t want you bothering the paying customers who use their software? In short, how do you do UX research when you can’t get direct access to your users?”