This is good advice. However, I also think that you (the OP) also need to change your mindset.
For context on myself: I have lived most of my life in your situations like yours, until recently when I became wealthy enough to retire early.
As a kid, my family ate government assistance food. There were times when I had to look in the couch cushions for money to buy food.
For all of my life, I've known people who are very visibly wealthy. However, I was fortunate enough to learn early to hold wealth in mild disgust and also not make a big deal about it. I encourage you to develop this sort of attitude.
As randycupertino mentions above. Not only is the hedonistic treadmill is real, it's actually sort of pathetic. Many people who are rich become sort of helpless. Unable to do simple things like changing a car tire by themselves. Learn to be self sufficient and take pride in it.
The other thing to realized is that past a point money won't buy you happiness. And you are in control of where that point is.
Now, to add to what vanusa says above. You need new friends. I say this because one of my good friends is very wealthy, but I never once felt bad or envious about it. My friend's parents came from very humble backgrounds and they did a wonderful job at staying grounded and kind. This family didn't brag about money, they wouldn't enthuse whilst telling me of their good fortune.
Furthermore, I think it's very tacky and shallow to talk about wealth.
Personally, when I became wealthy, my spouse and I agreed to not tell anybody about our wealth. The only people who know the true value of our wealth are me, my spouse, our accountant, the IRS, and God.
Certainly, some people have their guesses, but there is no way for people to know the precise details. We still live in the same modest house, drive the same 10 year old car, wear the same clothes, etc.
A big reason why we haven't changed our lifestyle is because our friends and family are very important to us and we don't want what was honestly a lucky break to get in the way of those things.
To summarize:
- I've been in your shoes in the past
- You need better friends
- You also need to work on yourself and your mindset