The best thing I did was get engaged to a musician, someone I loved for years, early in med school years. I knew my income potential was our rock. For medical school I took out a loan from a wealthy relative rather than a bank, with a lower interest rate, and as it turned out, a good will gift in my future. Fiancé, now DH of 33 years, agreed to work however he could and try to make it in music until we started a family then would stay at home if needed. So while at school, living far apart, I borrowed what I thought I would need each year for everything, and calculated carefully. My parents helped by giving me a credit card for gas (dad worked for Chevron) and a Mastercard on their account. I honored their trust in me and only used it for clothing at the student store--mostly Speedo swimsuits for my workouts, LOL. I was LBYM to save up for our wedding. I saved 10% of my loan money, and paid for 90% of our wedding. My parents helped a little. 30:20 hindsight, they should have offered more.
We lived paycheck to paycheck for the first couple of years during residency. My rich aunt was so proud of my accomplishments that as a wedding present, she gifted us all of the accrued interest, lowering my loan payment, which did not start until so had enough to survive:
We never asked our parents for money but needed extra so we wouldn't be eating ramen 3x/day that first year, and had a rent check problem the first two months due to me not being paid until 5 weeks after I started residency. We borrowed from our best man in June. We paid him off in November. I also had the benefit of access to free food at work until finishing residency. We did not make "minimum" payments" because AmEx did not allow this and that's all we had. We didn't use credit cards much but early on saw the wisdom of paying in full each month.
My last year in college my sister and I had to get out of our parents' house. Our parents' drinking and arguing hit a peak and interfered with our studies. We both had lived at home up to that point. (My sister was 1 year ahead of me but I fast tracked out of high school in 3 years so we graduated from college the same day--UC Berkeley). Despite the difficulties, the folks understood their imperfections and gave us access to a car and food money and paid our college expenses in full. We assisted a 91 year old woman at night in exchange for a back room in her home, 3 miles from campus. Personally, I kept my food budget under $15-20 per week with copious tuna casserole, PB sandwiches and frozen spinach.
Heck, my parents started stock funds to pay for our college but then never gave us access to them. I never could figure that out. They could have cashed them out for me for medical school but never did. It would have cut my loan by 30%. Eventually they signed them over to us. By the time I had access mine was worth about $15K. I went through 3 years of underemployment in 2004-2007 and cashed the thing out later, which was useful.
BTW my parents partially funded my ER, so I am grateful for all the experience.
I still like tuna and frozen spinach.