I know this pretty well! I went to a top college as a very poor person. It did kind of suck to see people have an easy go at things with exceedingly little effort, but I got used to it over time. I knew that I didn't share any interests with them, so I didn't socialize with them at all. That's what I'd do if I were you now.

My bestie since we were toddlers married well, and kind of half-assed her way through a middling college ended up with a big house, and at one point all she became was a rolling advertisement of things she had but never worked for. It wasn't jealousy, but kind of shame at how shallow she was.

It helps, too...if you can plan out obtainable goals and work to achieve them, one small success at a time. It wasn't that long ago (to me), that I was slightly younger than you are and living in a 700sqft house.