Envy and Jealousy..

Jealousy can be complex on the emotional stage.  It can include fear of abandonment or other fears, rage, (don't smash the china, catch yourself in midair) to humiliation.  If we look into this emotion, the person perceives a threat to a valued relationship.  The threat can be real or perceived.  It can include a romantic relationship, between siblings for a parents attention, or friendships.  It can be a wake up call, this relationship is important and it feels like it is threatened.  So knowing this, step back look at what is important.  If you get into the reaction mode, then step back again.  This is the lower part of the brain working and it just knows reaction not higher thinking.
When envy gets on the scene, then there is the idea of, "I want what you have".  This is usually between two people.  Watch this also, it is usually a pattern that was created from sometime in the past.  Why do I want what you have?  My hands are full with what I need to do, and I still want this?

LENS neurofeedback can help to reach down into these areas and calm the reaction.  Why do I want and need such destructive emotions.  Envy and Jealousy are destructive.