Working with family can be fraught; people constantly tell us they could never do it. But there’s a long tradition of family law firms and, in particular, of fathers bringing their sons (and now daughters) into their practices.We can certainly understand why some people want to keep business and family in very separate parts of their lives, while others want to stay close to their loved ones in everything they do. Over the course of our careers as lawyers, we’ve done both.Michael Wittenberg: You could say that …