I find this question really interesting.
What is jealousy itself ?
Jealousy generally refers to the thoughts or feelings of insecurity, fear, and concern over a relative lack of possessions.
Jealousy can consist of one or more emotions such as anger, resentment, inadequacy, helplessness or disgust and so on
We humans in one way or the other fall into situations like this but however, it depends on how you control your emotions.
This attitude is mainly common among women the most especially in relationship due to lack of fear or insecure to save such relationships.
But no doubt men too are also involve in such situations to as well it is vice versa
Like i said earlier it's depends on your emotions on how you go about it some people would take it personal when seeing their fellow people in possession of some things and would in one way to the other envy such people.
It can help positively and also negatively it's depends on how you deal with your emotions