This is great advice, I feel. I loaned my sister some money for school, and she made an honest effort to repay me, but started falling back on it after a while. So I just said "consider the rest of the loan a birthday present" and asked her to not pay anymore on it.

Because at the end of the day, I'm not going to let money destroy a relationship, and I gave her that money to relieve her stresses, not to contribute to them. So from now on, if I give money to my family, I let them pay it back according to their conscience and ability. People who need money really don't need more things to worry about.