One mean comment can drown out ten kind ones. Your attention is unfair. Correct for it.

Threat gets priority in your head, so criticism is stored in bold and praise in pencil. That is not a flaw in your character, it is an old safety setting running where it no longer helps you. Left uncorrected it gives a wildly inaccurate account of how you are doing. The arithmetic is simply wrong.

Correct for it on purpose by keeping the kind things somewhere you can reread them: a note, a screenshot folder, a page at the back of a notebook. When one comment is drowning out everything else, go and read five from the folder. That is not denial, it is putting the weights back.