One of the crucial phases a writer goes through is garnering criticism from peers and beta readers, but when you’re putting your work out there, some degree of cynicism is essential.
Indeed, it is crucial for a writer to identify what advice to take and what advice to take with thanks as you slowly back away, holding their notes to your chest, before bidding them farewell, closing the door, and shoving the toxic lot in the bin. And setting it on fire.
Seriously though, it’s a skill. Every writer needs to master it, else you’ll either disregard everything and never improve, or end up writing by committee – and NOBODY wants that.
LE Henderson has an excellent post on her blog Passionate Reason about the Seven Types of Writing Criticism to Ignore.