Quote:
Can you give me an example of how something "good" comes from Jealously?
Emotion is a dynamic process (of course). A theory in psychology states that there is such a thing as a basic level of emotion. Consider it as a constant line in time.
Outer processes can disturb this continuity: That line can go down (negative emotions), or up (positive emotions). Of course thoughts are considered as an outer process as well.
Our inner physiology however, wants to restabilize this emotional line. Those who know a little about the human body (

), know that there's always an overshoot when our body wants to correct a disturbance.
Outcome is that after one would run a marathon (except for the endorphines, his body is in total pain), that person will feel great, surprisingly enough. And that's not only because he made the finish.
That's also the reason why after an argument with your GF, you have the most passionate sex.
Hell, that's probably the reason why negs even work on a girl (yeah yeah, there are more reasons than this, I know!).
So there surely must be some positive effect after feeling jaleous.
Personally I think jaleousy should only be a thought, not an action though.