If 당신 did not need the money what would 당신 do for work?

Volunteer work - helping others.

volunteer at an animal shelter

I knew a guy who worked as a at a state owned shooting range. He didn't get paid much, but he got to spend his working hours talking to his fellow gun nuts.
That, that there is what I would do.

I would be a writer and a mother.

Which is what I plan on doing, anyway.