I totally sympathize -- I felt like I had it all together until about a year ago, when I took some bad advice and switched from part time, which I loved, to full time.  Now I've got to figure out what I want to do, how driven I really am, and how the hell I'm going to support my family.  

Point being simply that you're not alone, I think it's a struggle we all face because I'm coming to the realization that while we can have it all, we just can't have it all at once.  So I think you have to zoom out a little, if you can, and take a long view.  Which is far easier said than done.  

--R