Dear Mears,
At work so no time to read all of this, but like everyone else I was very surprised to see your name on this thread. You are/have been a godsend to so many of us on Mumsnet, I only hope that some of the help/advice here has helped you.
Having started an OU degree before DS I know the difficulties of juggling a full time job, committee work, social/family life and trying to study.
I had to find 15 hours a week, when I didn't even know I had one. I'm sure someone has already said it, but you need to sit down and make a schedule, making sure you leave time for you. The things you cannot fit in now, you reschedule for another time. This doesn't mean you can't do them, but you are only human and there are only so many hours in the day. Make sure you do put a date for the things you have to postpone, that way they are there to be done, and you can stop thinking about them and just concentrate on the work at hand.
If you try and fit in 25 hours a day with no 'me' time you will go mad!
Make sure you do leave time for yourself to relax, go out with DH, or chat on MN. All work and no play makes mears a very stressed girl indeed.
BR
PS 43! Too old... come on now, you're just getting started!