I have friends that are much better actors than I am that had to quit the business because they couldn't survive the auditions or the rejections, or people just didn't realize how good they were. ↗
I tell writers to keep reading, reading, reading. Read widely and deeply. And I tell them not to give up even after getting rejection letters. And only write what you love. ↗
For over a year I continued to submit mss, and have them rejected - the last few with rejection letters indicated the story was pretty good, but I was American. ↗