Psychology Today: “Think self-criticism is helpful? Wrong. We fall for the idea that self-criticism pushes us to perform better and to live up to higher standards. Yet we couldn’t be more wrong. Research shows that self-criticism is more akin to self-sabotage. It actually hurts our performance, productivity and well-being.”

https://www.psychologytoday.com/blog/feeling-it/201602/the-hard-data-self-love-and-why-it-leads-success