thanks m in Israel -I love that poem/song from Uncle Moishy –
I think the bottom line is that you have to realize that it is ASSUR to be jealous, right up there with not killing…..
It is definitely hard, and there are people who have charmed lives without sick or missing parents,siblings, etc. It is all a nisayon to make us have to work on ourselves. Jealousy is a very common middah and I doubt anyone is immune.
Practical tips really are back to basics, mesillas yeshorim, chovos halevovos, good shiurim that talk to you.
Focusing on spending each day accomplishing what you can will distract you from being absorbed in the COMPARISON race which leads to jealousy.
There will always be somebody who can do it better, is richer,prettier,smarter,more popular,etc. But you were created by the master designer with your specific journey, with everything that you need perfectly provided.
Focus on that and what you can do with it.