I am highlighting this as this may be one of the most easy-said-than-done tips in the article. Though I am the one who wrote this I admit the level of defensive mind to design critique is always like a seesaw.

I am still practicing deliberately to detach myself with the output I have. One helpful tip is to walk away a bit — Walk away from your laptop and try to learn more about how the product or feature you designed is hatched. You will realize that YOUR design was initially an ambition repeatedly kneaded and then transformed into a product embryo that connects various systems and provided certain solutions (but still an embryo). Then you joint to visualize it and make the touchpoint humane and a joyful experience to fulfill the ambition. But it’s far from the finish — you should count on the development, quality assurance, and project team to really craft it out and make it deliverable. Then the operations and marketing will exert their expertise to make your audience know your baby and accept it happily.

Yah. It’s such a long chain and a system of complicity so no one is capable to know everything when they actually work. No one can achieve perfection on their own. So as someone who actually carves out the outcome that actually belongs to a joined process, a designer should really treat critique and input as a norm and accept happily. Just remember don’t accept anything blindly. It’s okay to ask questions.