How to get a new reputation?

I heard from my friend that a lot of people thought i was snobby and mean and evil. It's only because I have a staring problem. I have lost a lot of my old friends. I wouldn't talk to anybody because I was just tired of everybody. Now I think I actually am starting to be mean on accident. My mom and my brother were always hard to get to know. So am I. I am just a naturally quiet, down to earth person and people think I am being snobby. Which I'm not. I want to know how to talk to people and be nicer and get over this mad mood that I have been in for a while. It's summer time, so i think that this is a good time to change. So please help! It is my last year of Middle School and I don't want to mad the whole time through it! Thanks!!!!How to get a new reputation?
obviously somthing in your life is causing your anger. Bad moods just dont come out of no where there has to be somthing bothering you. %26amp; if you cant think of anything and you really want to change then drop your friends and make new ones. you dont want to go into high school with a bad attitude anyway.

i used to be the worst person ever with my anger issues i used to NEVER be happpy always yelling at someone. always in a bad mood. i changed some of my friends and hung out with happier people ,, people with a diffrent outlook on life. people that were going to be successful when they got older just natural happy people and having a good relashinship with ur family will also put you in a better mood.