just be like “well blah blah has a good mom on her side who supports her and uplifts her”. you are letting her negativity spread to you and now you end up devaluing yourself when really you are trying your best and that’s what matters. not everything is easy for everyone, i’m sure you are really good at some things that the comparisons are not. also, try to shift your mentality from “i struggled/i put a lot of work in” to “im a hardworker and i perservered until i succeededd”, trust me.