The biggest sign of an amateur UX designer is excluding end users from the design process. At the very start of my career I held the attitude that I could test any app, website, or product on myself, replacing the act of speaking with users. Never a good idea. It took time for me to learn a more professional approach, which is to start the design process by listening to the end user. Overall, UX research helps us avoid our biases since we are required to design solutions for people who are not like us.
“Insights that are received directly from user experience research are like muscle memory; the more you do research, the more insights you build up. But just like muscle memory, YOU have to be a part of the hard work in order to enjoy the lasting benefits of it that are specific to you. While it may be tempting to outsource research to a specialized team (and sometimes you can’t avoid it), you should try your utmost best to engage in at least a little bit of the research so that the insights grow under your skin instead of being handed to you from someone else who has sweated it.”