Super Serious Question

What should one do when you are seriously outcasted?? What should one do when people ignore you and you self blame because you don't know the reason for their disapproval towards or maybe you know but you can't possibly do anything about it or change when it's just your personality???
Especially for a person who is usually carefree but emotionally too weak even the slightest hit is like a huge blow from Divergent Sila Divine General Mahoraga??
(P.S- I have exams but the overthinking won't stop so I need answers)