Are flaws OK? or do you always need to be improving?

a guy told me that my biggest flaw is being concerned and caring...i said that I'm OK with my biggest flaw being caring too much and that my flaws make me who I am...he pretty much ripped me apart and said that flaws aren't OK and it's not good to be OK with your flaws...what do you think?
Are flaws OK? or do you always need to be improving?
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