Jealous?!?! In my country they have a idiom like this " if you look up someone better than you, you would feel worse but if you look down someone more worse than you, you would feel better". In this life, nobody is the same. we are unique. But sometime we compare ourselves with others even our relative, best friend. At school, you would sad if your best friend have a bad scores. but wait you would have more sadness if your best friend have a better score than you. Someone just move to a bigger house and tell you. so you wanna a bigger house than they. they have something you always wanna a better one. Yes, sometime it is good because it makes you try to be better. but sometime it's not. When we jealous with somebody, we waited our energy for that and we can't do anything. we always follow them and see what they do what they have. and the worst thing is we have bad about ourselves. we lose confident. So how can we improve it? In my opinion, the best way to improve it is we should take attention ourselves. we makes a plan or goal of our life to makes our life better. when we complete it we will feel good and at that time we realize feeling good inside is better than compare with others. I think the idiom at the beginning is a little bit wrong. we don't need look up or look down someone else. just be yourself. let's compare yourself at this time with that past and future. that's all. p/s: that is all my experience and my opinion :) :)