Jealousy ..

I wanna talk about jealousy that what is jealousy and why people get jealous of others .. so first of all let me tell you , what is jealousy ? Jealousy is something in which one sees his/her defeat in other one's success ...People get jealous of others because they can not see other one to rise .They think that if other one rise , he/ she might left behind but that not the case ...Everyone has it's own skills so we need to work on our own skills and abilities and don't get jealous of others ...