How do I stop being jealous?

Jealousy results from the illusion of control and possession. It is also based on a lack of self confidence. If a person doubts their own self worth they see everyone around themselves as potential rivals in that others are somehow inevitably 'better' than themselves. Realizing that you cannot own or control another and understanding your own self worth are major steps in discarding jealousy and embracing your own innate superiority. Someone is with you because you're the best. Not the best available, not because there were no other choices, but because you are the one! Then all you need to do is live up to your own best expectations of yourself and the world is your oyster!