I wish this principle was adhered to across all industries where we (as individuals) get our 'work' reviewed. If you can't do your best and then be able to let go of it, it causes some serious pent-up anger and demotivation. I find myself slipping into 'brutalist feedback' mode (that I'm used to from creative work), before worrying about offending the recipient.
I'm not sure if this is coincidental, but anecdotally I found that my biggest shift in being able to let my creative work 'go' was after reading The Power of Now[0] and The Chimp Paradox[1], and practicing mindfulness. Fundamentally, I think it's an ego issue as to why it's so hard to take criticism. I'm certainly not saying ego-death is a prerequisite, but instead to learn how to short-circuit your anger away from feedback as a result of taking it too personally.
It is after all, not the work itself, but how it is received that you should be striving towards!
[0] - https://en.wikipedia.org/wiki/The_Power_of_Now [1] - https://chimpmanagement.com/the-chimp-paradox/