There is, in all matters, something about forcing things that rarely seem to work for me, unless it is a deadline in webdesign or such.
As I grew older I saw that even the most opinionated different-valued family member usually wanted to contribute. Sometimes it's a loan, sometimes it's looking after children, sometimes it is helping to fix something in the house, etc. Usually they do this because they are family. In most cases this is what it is like in all families. There is a will to contribute. You just need to need the help, to ask for it, and, of course, to want to receive and appreciate this quality from your family and put aside your other opinions for a moment.
There are many ways of giving. Perhaps we can measure our feeling of being blessed in direct relation to how aware - and how appreciative - we are of each.
Working together again with people who want to contribute to the world - even if we don't work together on the same project - that will have an immediate effect on the vitality of the soul. And it's positive.