One thing that helps me is,when I do look at fancy homes, cars, jewelry,… I just remind myself that maybe, those people maybe are taking away from their Olam Habeh. I try to make myself content with what I have.
I don’t think thats a nice way to think about it. Maybe a better way is that if YOU had it would take away from YOUR olam habah? Just because someone has all the fancy things in the world, doesnt mean they won’t have a great chelek in olam habah.