>Ongoing criticism will stifle your creative voice.
This goes back to my comment about confidence. A writer who is secure with their writing can take even harsh criticism at most any point. When the comment is barbed, I admit I can feel the arrow when it lands, but I'm able to pluck it out and keep going. At other times, I can grit my teeth and see where the improvement needs to be made. Most times, I'm just grateful somebody caught the mistake before I showed the story around any further.
I'll also say that how I react to criticism has evolved over time. Some cuts bite deeper than others. A criticism of grammar doesn't affect me at all. A criticism of pacing or structure troubles me. A criticsm that says this character just doesn't work, especially of a character I like, feels strangely personal, even though it isn't. Those are the toughest to evaluate.
But creative voice? For myself, if my creative voice could be stifled, I wouldn't call myself a writer. That voice is irrepressible, won't shut up. It's as bad as my dog, who insists on being walked every day or it just drives me and everyone around me nuts.
That said, I do recognize that others appear to be much more fragile on this. I don't say that as a criticism, but as a recognition that not everyone is the same. So, if you're a new writer, be aware of how you react to criticism. If it really hurts--and it truly does for some folks--then be more cautious in soliciting criticism. The very worst thing to do, imo, is for the tender writer to show first-draft new writing to a group of strangers. I see this on Facebook a *lot*. Some folks need encouragement before they need critiques. And nobody needs random roasting.