As householders (young and old), we have duties and responsibilities.
How can we practise detachment while fulfilling them, especially detachment pertaining to family?
Contemplate on the truth. Was the family with you before you were born? Will it be there with you after you die? Your family members change birth after birth. So do your duty, and be nice and kind to them, like you would be to fellow passengers in a bus or train, knowing fully well that they will all part ways with you at their own stations.