Baby

With any creative work, the end result (or at least one of them) is considered your "baby". This is the most dangerous mindset a writer could have along with anyone else who has a personal attachment to their created works. When dealing with something that can be edited, such as a written piece, it is to the benefit of the writer to be critiqued and accept the viewpoint of others. That doesn't go to say that those viewpoints always need to be followed, but the work will continue to lack dimension (in most cases) when offense is taken to a critique.

Falling in love with an ugly first draft as if it were the full finished work cripples the potential. I've worked in video editing and motion graphics, and I've learned that what my eye doesn't catch everything, and that what's needed may not be what I produce the first few times. If I took that personally, I'd quickly be out of work and limit my growth substantially. The same goes for our writing. Growing hurts and criticism isn't fun all the time. Changing the mindset and adapting is what separates those full of themselves from those who make a living.

Not everyone is going to understand a certain perspective, and not everyone will like the same story. But allowing yourself to be open and see at least why is a powerful tool. We can't be swayed by every opinion, but we also can't be stuck in our ways. Finding that happy medium is what will promote growth to those who want it and prevent a lot of heartache along the way. I speak from experience.