Mean People Suck!
Luann Udell blogged about how she lost friends to jealousy. It happens to all of us all the time.
If you are successful, some of your friends that are not so successful will resent your achievements. Some of them may even try to backstab you. But, true friends are the ones that always stay with you, rain or shine.
May be this jealousy thing is a good one! You will know who your true friends are. That will help you in the long run.