What makes some children take an insult to heart and let it distort theeir lives, while others just shrug it off?
Some people suffer with emotional dysregulation, others with rejection sensitivity, body dysmorphia, low self esteem, etc. We're just different.
I grew up with a mother who was scathing about everything to do with my appearance, body shape, ability, etc whilst praising my sister to the hilt in front of me. I didn't realise she did the same to my sister about me. Combine that with men who came into our lives as kindly father figures and then disappeared without trace just as we'd grown to love them and you soon get low self esteem. Other people outside the family could crush me very easily. They still can to a certain extent but as I get older I care less about what other people think.