You're hitting at the only source of happiness/sadness for humans: success relative to their neighbour.
You either have to really accept other ways which I think is hard or get better than them which is probably harder.
I grew up in a small town of Normandy, from middle class parents, left home at 19 with a financial buoy from the State and my parents to get a 5-year degree and learned to be very slim in desire, since I was spending other people's money, then lived in relative comfort with my girlfriend when we found okay jobs in Paris.
I was sort of sad then, having like you little fortune to show. I did two things: I saved like a monster, for 3 years, up to 20k USD, and I dived into English, to reach my fluency objective.
After 3 years, I left my girlfriend, moved to Hong Kong, burned half my 20k savings working with my parisian salary there looking for a job. 7 years later, I have a Porsche, earn 4 times my initial salary with a local wife earning even more, and have a lot of money saved in various shapes. I feel I won so far, while I dont forget that it can just disappear tmr and it's okay, will just have to find another angle of attack.
Find a skill you can tune more and take a large wealth producing decision that not everyone takes (leave your roots for a rich place needing your new skill, for instance). If possible, tame the jealousy, it's really toxic: have fun doing something special like I have living in China, and use that as your worth-comparator. And find a working partner.