Advice?

So people keep telling me that I need to stop being so judge mental, and agree. I really do, and I mean it. But I find it so hard, when I judge someone, I don't even think about it, it really doesn't occur to me that I'm being so harsh.

I'm dying to change. I think the reason it's so hard for me to not judge is because I don't want to get hurt. Like if I open up and take a chance with someone that something will end up bad.

I keep telling myself, think of what that person might be going through, and how one of your little comments can affect them so deeply, but like I said, I see someone, I make a comment and all my work in progress is out the window. I'm not really thinking about it too much when I do it, I just do. I hate myself for it.

It's also because the people around me are so judge mental. Two of my friends love to make fun of people they don't like, and sometimes I just want to feel like I fit in.

Please give me some advice on how I can stop being so judging towards people, make myself a better person and stand up for myself and for others when I hear people judging them.