Jealousy is wanting something someone else has, and most of us suffer from it. We can envy someone else's looks, intelligence, success, wealth, mate or educational background. We can envy another's gifts, luck or health. We can even envy the love someone else has in his or her life or the admiration they receive from others. We can be jealous of anyone for whatever we think they have that we want.
Jealousy has impact, and it's destructive. Obviously it's a negative energy, and that alone can have an impact on the person against whom it is directed. In addition, jealousy can lead us to do mean things or withhold love or support from another.