i know its hard.... that has happened to me my whole life... and ive listened my whole life... i think thats why i had such low self esteem and gained more weight.... i know its hard not to listen but try...im going to tell you what i do when people do that to me....i realised that most of the people that made fun of me were skinny....so in my head i know that i could always lose the weight...but they'll never lose their attitude... and when im skinny...they'll probably be fat...it actually makes me laugh...i hope it helps you....