Someone who doesn't want the very best for you, someone who loves something for himself and doesn't want it for you as well..doesn't want you to have the thing he/she loves or doesn't want you to have the same as well.
Someone who wants you to be a failure just like them, who is beyond jealous of you and what you do have that they're jealous of doesn't want it for himself..doesn't want it but wants for you to NOT have it either. These ugly qualities and ill feelings..that person is an accursed loser and is very sick..they are ill.
A loser who doesn't benefit from the evil they do to others and wants others to not benefit anything either.
Just wants for you to be miserable and is so jealous of you..which means they do not acknowledge that it is God who blessed you with what you do have and it belongs to God in the first place whatever is that you are blessed with. Whatever you have or anyone else does. This kind of loser is ill..their heart is ill, infected, blackened and impure. It is the worst illness of all illnesses to have ill feeling inside of you. It is the fleshy part of your body, your heart, that can be infected and there is no cure. Only God can purify you and can make you a wholesome, good, pure person that everyone can love. Only God helps change others for the better, from a loser to an honored person, and changes those who are willing to change and for the sake of God.
The only way to be safe from such illness is to seek God and ask Him to protect you from such illness because it can happen to anyone and no one can protect you from it or cure you from it except God alone.