[Neoshadow42]

As @dusted said, one important thing to remember is the disconnect - the work you do is a culmination of any number of factors on a given day. I couldn't agree more.

For me, the biggest thing though is trying to have a learning or improvement focused mindset. Understanding that most comments and every mistake you make are a step in a direction where you've learned something and gotten better. You, the codebase and the reviewer are all better for the experience.

Also - it IS okay to feel a little bad or frustrated when you've done a piece of work you're particularly proud of and it gets a lot of criticism. It's important to keep the above in mind, but it's also human. Don't feel bad for feeling bad. Just try to regulate it, and remember it's for the better of yourself and everyone.