It is a very human trait in us to feel that another's advancement is in some way a blow to ourselves. It is equally a human trait to feel that another's downfall and disgrace in some way adds a bit of luster to our own crowns. Of course, nothing could be more utterly false.
Covetousness is therefore, a sin with a very wide range. If it is the desire for money, it leads to theft. If it is the desire for prestige, it leads to evil ambition. If it is the desire for power, it leads to sadistic tyranny. If it is the desire for a person, it leads to sexual sin.