Jealousy, like many negative emotions, is a waste of your time and you should keep your involvement with it to a minimum.
Can you think of a positive outcome from jealous thinking? You could say being envious of someone else’s financial success could motivate you to work for your own. However, that wouldn’t be a healthy reason to want success would it?
In my opinion jealousy is a side-effect of a mindset that’s rooted in scarcity. Jealousy is the emotion resulting from the notion that another person’s success or happiness somehow diminishes your own. If you look at the world from the lens of abundance instead of scarcity, it’s very difficult to become jealous.
Overcoming Jealousy – [StevePavlina]