Understanding jealousy is important. I think a big mistake that people make is believing that jealousy is attached to someone having more than what you do. Many times people who have more things than you do materially can still be jealous of you. Jealousy is a state of mind. Is it grounded within insecurity. I've watched people be jealous of others for things such as an outgoing personality or even jealous of a relationship one had with a relative.
Once you understand it and recognize it you'll it'll be easy for you to combat it. Jealousy can turn into anger fairly quickly. As we all know anger can blind you. Especially when it's a blinding rage. If I could say one thing to anybody I would say jealousy does not always come with a frown. Sometimes the very people who smile at you are jealous. Pay attention to actions.
