How do I keep myself from taking things so personally?

I know this is a "Dear Abby" question but I would like for someone to help me out the best they can. A month ago I was kicked out of a gaming community. I made one of the leaders upset with me by going over his head. Up until then we were great gamer friends. He started to be very indifferent with me afterwards. That really bugged me. I was dragging one of my friends into our issue which I shouldn't of done. Now I'm the type of person that takes things personally when someone gets mad at me online. I know I should of let it go but it felt like to me that the friend who was mad at me was being mean to me. I tried to talk to him but he didn't want to. I felt he was holding a grudge against me. I'm a very friendship relavant type person when I'm online. I would like to have some advice about not taking things so personally if something ever comes up in the future.