Giving and receiving feedback—without losing one's cool—is an art. It's incumbent on designers to encourage others to give them quality design critiques on their work that cultivates constructive discussion.
User testing, often confused with usability testing, is an overarching term which helps validate the need for a product. When used with prototypes and the right testing tools, it can help save a product from failure.
When having the right UX tools is the crucial difference between having an effective design workflow and one that’s slow and unproductive, it’s important to stay up to date with the latest tools (with infographic).