What personal rules have you developed when it comes to borrowing or lending money to friends and gamily?

And how did you get to forming those rules? In my 20s I borrowed money from a close childhood friend and was constantly reminded that I need to give it back and he was not giving that money to me.

This was a result of me borrowing from a mutual friend of ours in high-school which took me a really long time to repay. My fault but it changed the way I looked at my childhood friend since kindergarten.

In my mid-20s, another close friend of ours borrowed quite a bit of money from me to help him process papers so he can work overseas. Which he did but he never repaid me the money for several years.

From then on I decided not to borrow from anybody especially my friends. And I didn’t lend either. When they need help financially I gave as much as I can afford telling them it’s a gift
and not a loan.

This I think saves me from losing friends over money.