I am about 12 years removed from college days. My friends and I all started at about the same place, but I am a lot further ahead than most of them now because what I decided to do with my money.
For me, it started in high school. Freshman year, I mowed lawns over the summer, bought a few video games here and there, but mostly saved my money and put it in the stock market. With that, I paid for my own college debt free. I still always worked part-time during the semesters and full time in the Summers and had about $15k when I graduated.
Me and 3 college buddies were renting a shit-hole at the time, so when we graduated, I offered to buy a place if they would pay me rent. So, that $15k was the 10% down I needed on a $150k 4-room house. They paid the mortgage, we split the water, electric, gas, and internet four ways. So, even though I was barely making $30k at my job, I was able to continue to put money away. Bought rental house 5 years later, another one 2 years after than, and a 4th a year after that. My renters pay the mortgages and I still clear between 37% - 90% profit off the top each month. It is a snowball rolling downhill effect that is still picking up speed.
If I told you my yearly salaries at my day job during that time, you might call bullshit because I have never made anything to brag about. It is not how much you make, but having discipline and a financial plan with what you are going to do with it. I am a believer in goals. Set them, tell your friends and family about them (accountability), and then be patient enough to stick to the plan.
Most of my friends are still living in shitty 600 sqft apartments and can't even afford to put any money away each month into their 401k's because they buy a new car ever 3 years, rolling their previous loans on top of the new ones.
Your average person does not have much control over the income or salary they are able to make, you just kind of take what you can get. BUT you do have control over what you do with your money. Make your money work for you, turn every $1.00 you make into a $1.50.