How do you deal with your relatives, friends etc who're jealous of you for minor reasons, for example, if you're looking nice or wearing nice clothes, living in a better house than them or driving a nicer car.....you know they hate it and that's why they're not nice to you and they demonstrate this by taunting and by being harsh to you?
If they taunt, I do either of two things. I ignore their immaturity OR if I feel that they are really crossing the line and that I've put up with their crude behavior for too long, then I will say something to them that puts them in their place.
Some people advise taking the higher road ALL the time, and while that that's admirable, I don't agree with it entirely. Any extreme, even a positive one is not good. I've learned from experience that such people, if they are quietly tolerated by others, then this silent approval only fuels and encourages them to treat more and more and more people like crap. It creates more victims. But if someone stands up and let's the idiot know (even nicely) that their behavior is a turn off, it might cause the idiot to reflect upon how others are perceiving them. There's no guarantee, but when you see something wrong taking place, it's good to try to stop it if possible.
Another tip is to try and genuinely compliment the jealous person. This encouragment might boost their self-esteem and soften them up. Although I've found that with those who are severely insecure and bitter, they'll be back to their toxic ways in no time.