Marc - Being driven to the brink of insanity by an impossibly long "To Do" list sounds familiar.
Jokes aside, the only way not to get completely overwhelmed by
all the tasks ahead is to stick to the job in hand.
But the real key is to use what ever time you have available to work on the car no matter how small.
Whilst I've love to be able to spend 8 hours straight on the car every day, I've settled for as little as 15 mins on occasions.
Just remember every job counts and if you can keep chipping away at it, one day you will be looking at a finished car.
Good luck, Paul.
PS
I've been know to hang washing on the line / hoover / wash dishes / etc. in between car jobs.
