Who would you feel more guilty for letting down? Your friends or your family?
I think there are also segments within the categories of family and friends. For example you may feel more guilty for letting down your dad than your younger brother.
But if I were to take a stab at creating a rule of thumb I think it would be based on the importance you place on that opinion of you.
Who do you respect more?
Who do you never want to take for granted?
Who’s respect do you crave?
I think these questions can transcend the family and friends categories.
After all some people are closer to their friends than their family and vice versa.
Thomas Duggan 