We're all surrounded by bunch of people who're sick.. They've a disease with the name of jealousy. The disease which cannot be cured with any medicine in this world. One jealous person cannot be jealous with the one to whom he/SHE thinks lesser than him/HER. It's basically a inferiority complex which is found in people for those who're better than them. So one thing is almost clear that a sick jealous entity has something lacking in him/HER.
A jealous person start copying the other to be like him/HER and always lose his/HER own identity. So what’s to be a copy when there's no effort require in being original. I really don't know the logic behind this sick attitude.
A jealous person starts plotting and planning against the other one, knowing that he/she is all innocent. But here Allah always grant success to what is true.
Jealousy not ends here, a jealous person can be very very dangerous for him/HER or for society. It's a psychological disease which can ruin his/HER jealous personality and everyone starts hating him/HER.
Jealousy can also really dangerous visible marks on you, if you’re a jealous person, it makes your skin complexion DARK. Can send you in the messive stress phase, which can lead you towards heart attack.