If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Would it be fair to rephrase your question as "How can we make receiving constructive criticism feel good?"
If so, then I endorse the first technique you mentioned. (My mantra for this is "bad news is good news," which reminds me that now I can do something about the problem.) I intend to try the second technique.
I have a third tactic, which is to use my brain's virtue ethics module. I've convinced myself that good people appreciate receiving constructive criticism, so when it happens, I have an opportunity to demonstrate what a good and serious person I am. (This probably wouldn't work if I didn't surround myself with people who also think this is virtuous and who do, in fact, award me social points for being open to critique.)
Admonymous has some good advice on giving and receiving criticism. Also, use Admonymous. Mine is here.
Would it be fair to rephrase your question as "How can we make receiving constructive criticism feel good?"
Yes.