Creating a great user experience requires research. It just does. There is no way around it. You have to understand the goals of your user and know how your product is going to benefit them. You have to talk to them.
User interviews are the best way I know to understand the users of any product I’m working on. Even better if it’s in-person where I can have the user show me how they do their work.
Research provides reassurance that what you’re building is for someone.
Reassurance can also be a crutch. The problem comes when you need too much reassurance. User research is informative and can point you in the right direction, but it isn’t a guarantee.
There isn’t any reassurance without user research, but at some point you have to start building something. Learn what you can, but don’t let the desire for a guarantee keep you from making. You will keep learning along the way. The path to a good product is a meandering road.
Course correct as needed.