There was this story I read when I was quite young that left an impression on me. Could have been anytime in the 70's. It would not have been a new story at the time because it probably came from my Dad's collection who had been reading SciFI since he was young. Also, due to my prolific reading habits, my parents would not buy me new books. Used book stores were our friends!
I'm pretty sure it was a short story but I may have just condensed it in my mind.
The basis of the story was that in the contemporary society you could do anything you wanted as a young adult.
You were basically accruing debt that you would have to pay off by working. Once you hit a certain age (30 I think?) you were assigned a job to pay off those debts. The more you owed, the harder the job.
While many people were careful not to accrue too much debt, the protagonist of the story lived the party life and cared not what he spent.
On his 30th birthday he tried to cheat the system by jumping off a bridge.
He then woke up with his brain implanted in a ship and a debt that was going to take hundreds of years to pay off.
This story could have been a precursor to the "Brain Ship" stories by McCaffrey, Niven and others or it might even have been prompted by them.