Shut up, brain!

I don't know how to make my brain stop.  Alpha complains that I never relax.  And I really don't.  How do you relax when there's a list of chores to be done?  I feel like I take Saturday to do whatever, and when Monday rolls around, well, shit has to get done.  The time to relax is over.  It was allocated, and done, and now it's time to go back to work.
He gets upset that I am always go go go.  But if I wasn't, when would we get going?
Some of it is just the constant stress.  For the last two years, I was in grad school, and crazy about the horror that was my academic experience.  Then I was hunting for a job, and stressed about the lack of interest.  Then I had started my job, and was trying to adjust to the working world and our new location.  Now it's time to study for boards, on top of my already busy job.  Once boards are over, will I be able to breathe?  Doubtful - once my exam is over, they're wanting me to go full time, and I'll lose my three day weekends.

Do you ever just have so much going on that you become paralyzed?  So overwhelmed by responsibilities that you are literally unable to decide what to do?