Stop saying yes to everything and everyone. Stop agreeing with people just so you don't upset them. You're not a pushover. You were not put on this Earth to be stressed and miserable so others can be relaxed and happy (at your expense). Start protecting your time and your happiness. If others can't handle it, show them the door. Kick them out of your life and don't look back.
Please ! Everyone always has some sort of rude opinion... if you are not being forced to do it then let it go and move on with your life if you don't like it, rather than waste your time fighting something that has literally nothing to do with you.