I'm sorry that you have to endure that . I also know what it's like, to feel like I'm being ridiculed as I walk down that street. Makes me not want to go out. But I have BDD, so that's why it happens to me.
What I try to stop the negative thinking is that I think that maybe they're not laughing at me, but at something else....I don't know, it's hard, and I know how you feel.