How to get over a bitchy girl who laught at me for being poor (she never seen my bank account) and called me unatractive?

can't stop thinking about this woman years latter she was so unkind. It is stopping me from doing my work and making me feel bad about myself.

How to get over a bitchy girl who laught at me for being poor (she never seen my bank account) and called me unatractive?
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