Most "wealthy" people only get stressed by money because they mismanage it. They see a higher paycheck, and instead of working on paying down their current mortgage, they take out a bigger mortgage on a better house, start spending more on their credit cards because they can just pay it off later, etc. Then, when they lose their job, or they have to take a decrease in pay, they realize they've screwed themselves, and that's when the real stress begins.
Believe me, I've been there, done that.
So, learn to always spend less than your income, to save up for your big purchases instead of taking out loans for them, and to live debt-free. Then, when and if you do make $200k, you can have a hearty laugh at all your neighbors making the same amount, but somehow struggling to make ends meet, while you have a surplus of $15k+ a month. And if you only make $20k the rest of your life, you can still live happily being focused on other things besides how you'll pay this month's credit card bill.
that's true, when you start to mismanage the flow of cash that comes to you is the main source of stress. if you spend your money wisely, you wont have to feel like you're just "chasing" money and live from pay check to pay check (this is of course if youre earning above the base quantity required for basic human necessities) its also wise to keep track of your expenses and try to avoid impulsive splurging of money right when you get paid.