Supported a large family through work and student loans. The only job I could get was a gas station attendant and/or roofer and did both all during college. These jobs were a kind of torture for someone who took AP calculus senior year of high school.
Fast forward five years, two-internships and one mechanical engineering degree. I was now qualified for a $41k+ (13 years ago) job and started the day after graduation. Goodbye gas pumps and hot tar.
Unfortunately, most employers are too busy to bother finding out if someone is smart enough to be a great employee, so they rely on that piece of paper as your validation. However, engineering school instills a deep understanding of logic, critical thinking, organizational skills and knowledge that is very difficult to pick up by yourself.
I'll be paying $500+/month on my student loans for a looooong time, but it's THE BEST MONEY I EVER SPENT.