From Stephen King (born 1947), American author of contemporary horror, supernatural fiction, suspense, science fiction, and fantasy, On Writing: A Memoir of the Craft (2000):
I think I was forty before I realized that almost every writer of fiction or poetry who has ever published a line has been accused by someone of wasting his or her God-given talent. If you write (or paint or dance or sculpt or sing, I suppose), someone will try to make you feel lousy about it, that’s all.
Not hard to find someone happy to make you feel lousy these days, what ever you do. We’re drowning in narcissists.