I was once on a plane, flying from America back to London. I didn't have much to occupy myself with for the flight, but fortunately was sat near to an old austrian man, and beside him was a well-dressed business woman. He introduced himself to her, and in a friendly and polite way asked her whether she was on an outgoing or return trip, and what she was looking forward to on the other end.
She answered, with a quiet and reserved voice, that she was returning home, and looked ahead to seeing her children. She suddenly seemed to open a barrier, and admitted to the old man that she had recently withheld help for her friend in order to spend more energy on her family. But although she regretted this, she had promised herself that she would help her friend later, when she had more to give, and believed this was the right thing to do. After all, she said, friends come and go- but family is special.