I've found that the amount I make doesn't change how at peace I am financially. One year I made over $200,000 and honestly, I had even more to worry about.
I used to live in Brazil and most of my friends down there made under $500 per month. They all faced the same problems that Americans face making $2,000+ per month - we almost all spend all of our money no matter how much we make.
If you make $2,000 per month, you are richer than 90% of people on earth. In most cases, it probably doesn't seem like it because you know people who make $4,000 or $10,000.
No matter how much you make, people make less and more and some of them live within their means and find peace, others do not.