I get upset easily

i never put myself in a position really where i am made to get upset i usually brush most things off but if im ever thrown or forced in a position where i need to challenge somebody for doing something wrong or if im getting called out i get upset really easily!
im kind of in a mode where im used to being everybodies friend and am used to everyone liking me
but if there is one person out there that doesn't like me it really bugs the hell out of me..this prevents me from
becoming a supervisor at my job for the most part
i also have ADD and am told that having ADD makes you handle criticism in a certain manner idk if that has anything to do with it