If you don't feel as though you have a particular "calling" (besides parenthood), how on earth do you figure out what to do, job/career-wise?
How do I figure what I want to do?
no book recommendations, and I also don't feel like there is that one thing that I need to pursue career-wise, so no help there. But maybe you can look through the catalog of classes offered by your uni and see what different courses you would be interested in. Maybe they all have some aspects in common that point you in the right direction.
One thing to think about, too, is whether you're trying to find something to do to support your family and bring in some good bacon, or whether you're trying to find something to do just for the sake of having a career. I know that what I'd like to do with myself each day isn't what I will end up having a career in, simply because I will need to bring some good income to the table when I do take the time to work. If that makes sense...