"People who experience pathological jealousy, and people for whom jealousy triggers violence, may benefit from professional counseling. People who experience normal jealousy have at least nine strategies for coping with jealousy.
The problem-solving strategies include: improving the primary relationship, interfering with the rival relationship, demanding commitment, and self-assessment. The emotion-focused strategies include: derogation of partner or rival, developing alternatives, denial/avoidance, support/catharsis, and appraisal challenge.
These strategies are related to emotion regulation, conflict management, cognitive change, and ground rules for managing jealous competition. The most important thing to do about any feelings of jealousy is to first admit them, and then attempt to overcome them. Polyamory groups encourage the replacement of jealousy with compersion, or empathizing with a lover's joy with another lover."