“The user is never wrong” means, when a user snags on a part of your UX that doesn’t work for her, she’s not making a mistake, she’s doing you a favor.
To benefit from this favor, you must pay vigilant attention, prioritize the discovery, dig deeply enough to understand the problem, and then actually solve it.
In so doing, you will not only be secretly thanking the user who discovered your error, you’ll be aiding all of your users, and ultimately, attracting new ones.
Think about this tomorrow. For today, Happy Labor Day to all who toil.