If I won a million dollars in the lottery I would carefully review my options as today that really is not a lot of money. It is of course more than I have and I wouldn't turn it down but really it isn't a lot.
So I would make a list and priortize what I could do with it.
The first thing I would do is take care of my financial needs which may sound self centered of me...but that way no one else would have to 'help me out' if I could not manage.
Then I would help my daughter and her family out as needed. The remainder of the money I would invest so my grandchildren would have money for their futures.