Winston Churchill once said: "Criticism may not be agreeable, but it is necessary. It fulfills the same function as pain in the human body. It calls attention to an unhealthy state of things." Regardless of where you work or who you work for, being able to take criticism is part of the job description. Whether you're getting feedback from your boss or a client, having a proper perspective on criticism and a sound understanding of how to use it effectively is important.
Unfortunately, not many people enjoy criticism. In fact, many have developed a thick skin and take pride in their ability to brush it off and move on. However, despite its negative connotation, criticism often presents an excellent opportunity to grow as a designer. Before you can respond effectively, you need to understand what those opportunities are.
Uncover blind spots. Doing your own thing is easy, but your habits will eventually become deeply ingrained and hard to break. Criticism gives you a vital outside perspective on your work, uncovering potential areas for improvement that you are unable to see by yourself.