Today, everyone is telling everyone to listen to their users and customers.
Following this rule at face value is a disaster waiting to happen. Especially among beginner UX designers (or any innovator/creative for that matter), this can prove quite problematic.
Getting out of the building and talking to people is really only the first step. This step is data collection. Beginning researchers and designers conflate data collection with data analysis.
For example, in an interview or usability test, a participant might explain why they hate something. Or they might even tell you with logical explanations what font color needs to be used or that they don't seem to understand something.
Beginning designers might construe these comments as an indication that some element X of their design is confusing, and thus needs to be 'improved' based on the user's feedback. However, most of the time, this is the wrong thing to do.
First, your user doesn't understand that interfaces can be learned.
Secondly, your user doesn't have access to the same data that you have or will have.
Third, your user also has a bias of their own.
New designers try to overcome their own bias by hoping that other people's opinions will balance out the bias.
However, expert designers approach this differently. By talking to others, their aim is to discover flaws in their own reasoning, the reasoning of others, followed by analytical processes to decide whether their design really needs to be changed or tinkered with.